diff --git a/core/lexicon.json b/core/lexicon.json
index 17f27765e..170254224 100644
--- a/core/lexicon.json
+++ b/core/lexicon.json
@@ -17,7 +17,7 @@
     {"name": "drilling_fluid", "description": null},
     {"name": "elevation_method", "description": null},
     {"name": "email_type", "description": null},
-    {"name": "field_contact_role", "description": null},
+    {"name": "participant_role", "description": null},
     {"name": "geochronology", "description": null},
     {"name": "horizontal_datum", "description": null},
     {"name": "value_reason", "description": null},
@@ -262,10 +262,10 @@
     {"categories": ["relation"], "term": "PLSS", "definition": "Public Land Survey System ID"},
     {"categories": ["activity_type"], "term": "groundwater level", "definition": "groundwater level"},
     {"categories": ["activity_type"], "term": "water chemistry", "definition": "water chemistry"},
-    {"categories": ["field_contact_role"], "term": "Lead", "definition": "the leader of the field event"},
-    {"categories": ["field_contact_role"], "term": "Participant", "definition": "a person participating in the field event"},
-    {"categories": ["field_contact_role"], "term": "Observer", "definition": "a person observing the field event"},
-    {"categories": ["field_contact_role"], "term": "Visitor", "definition": "a person visiting the field event"},
+    {"categories": ["participant_role"], "term": "Lead", "definition": "the leader of the field event"},
+    {"categories": ["participant_role"], "term": "Participant", "definition": "a person participating in the field event"},
+    {"categories": ["participant_role"], "term": "Observer", "definition": "a person observing the field event"},
+    {"categories": ["participant_role"], "term": "Visitor", "definition": "a person visiting the field event"},
     {"categories": ["sample_matrix"], "term": "water", "definition": "water"},
     {"categories": ["sample_matrix"], "term": "soil", "definition": "soil"},
     {"categories": ["thing_type"], "term": "observation well", "definition": "a well used to monitor groundwater levels"},
diff --git a/db/contact.py b/db/contact.py
index 3f4995f67..db0dfce1f 100644
--- a/db/contact.py
+++ b/db/contact.py
@@ -87,7 +87,7 @@ class Contact(Base, AutoBaseMixin, ReleaseMixin):
     # One-To-Many: A Contact can participate in many Field Events.
     field_event_participants: Mapped[list["FieldEventParticipant"]] = relationship(
         "FieldEventParticipant",
-        back_populates="contact",
+        back_populates="participant",
         cascade="all, delete-orphan",
         passive_deletes=True,
     )
diff --git a/db/field.py b/db/field.py
index 551859dcc..0ebf7e6e0 100644
--- a/db/field.py
+++ b/db/field.py
@@ -31,7 +31,7 @@ class FieldEventParticipant(Base, AutoBaseMixin, ReleaseMixin):
     )
 
     # TODO: get AMP feedback on the roles
-    field_contact_role: Mapped[str] = lexicon_term(
+    participant_role: Mapped[str] = lexicon_term(
         nullable=False, comment="Role of the contact in the field event"
     )
 
@@ -39,7 +39,7 @@ class FieldEventParticipant(Base, AutoBaseMixin, ReleaseMixin):
     field_event: Mapped["FieldEvent"] = relationship(
         "FieldEvent", back_populates="field_event_participants"
     )
-    contact: Mapped["Contact"] = relationship(
+    participant: Mapped["Contact"] = relationship(
         "Contact", back_populates="field_event_participants"
     )
 
@@ -100,8 +100,8 @@ class FieldEvent(Base, AutoBaseMixin, ReleaseMixin):
 
     # --- Association Proxies ---
     # Proxy to directly access the Contact objects participating in this event.
-    contacts: AssociationProxy[list["Contact"]] = association_proxy(
-        "field_event_participants", "contact"
+    participants: AssociationProxy[list["Contact"]] = association_proxy(
+        "field_event_participants", "participant"
     )
 
 
diff --git a/db/sample.py b/db/sample.py
index 04e647c62..9fe46f797 100644
--- a/db/sample.py
+++ b/db/sample.py
@@ -104,7 +104,7 @@ class Sample(Base, AutoBaseMixin, ReleaseMixin):
         "field_activity", "field_event.thing"
     )
     contact: AssociationProxy["Contact"] = association_proxy(
-        "field_event_participant", "contact"
+        "field_event_participant", "participant"
     )
     observations: Mapped[list["Observation"]] = relationship(
         "Observation",
diff --git a/services/sample_helper.py b/services/sample_helper.py
index e8fecab4d..20423de80 100644
--- a/services/sample_helper.py
+++ b/services/sample_helper.py
@@ -18,7 +18,7 @@ def get_db_samples(
         .joinedload(FieldActivity.field_event)
         .joinedload(FieldEvent.thing),
         joinedload(Sample.field_event_participant).joinedload(
-            FieldEventParticipant.contact
+            FieldEventParticipant.participant
         ),  # Eagerly load related Contact
     )
 
diff --git a/tests/conftest.py b/tests/conftest.py
index 062cf5e9f..97a28ffe0 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -501,7 +501,7 @@ def field_event_participant(field_event, contact):
         field_event_participant = FieldEventParticipant(
             field_event_id=field_event.id,
             contact_id=contact.id,
-            field_contact_role="Lead",
+            participant_role="Lead",
         )
         session.add(field_event_participant)
         session.commit()