What does "sympatry" mean?

The use of the same (or overlapping) geographical areas, by populations of related species, without interbreeding.

What is a synonym for "sympatry"?

Common synonyms include: exist side by side.

noun

noun ·Rare ·Advanced level

Noun

1
The use of the same (or overlapping) geographical areas, by populations of related species, without interbreeding.
2
the occurrence of organisms in overlapping geographical areas, but without interbreeding wordnet

From Ancient Greek σύν (sún, “with, in company with, together with”) + πᾰτρῐ́ς (pătrĭ́s, “fatherland”).