What is another word for congruent?

Here are some words that can be used as synonyms for "congruent", depending on the specific context:

General synonyms:

* Identical

* Equal

* Matching

* Similar (in some contexts, but not always)

* Coincident

* Superimposable

More specific synonyms (depending on the field):

* Isomorphic (in mathematics)

* Equivalent (in logic or mathematics)

* Harmonious (in a metaphorical sense)

* Compatible (in a general sense)

The best synonym to use will depend on the specific meaning of "congruent" in the context.