cross-eye vs convergent strabismus

cross-eye and convergent strabismus both are nouns.

Word	Noun	Adjective	Verb	Adverb
cross-eye	Yes	No	No	No
convergent strabismus	Yes	No	No	No

As nouns, cross-eye and convergent strabismus are synonyms defined as:

cross-eye and convergent strabismus: strabismus in which one or both eyes turn inward toward the nose

Other synonyms of cross-eye include crossed eye, esotropia.

cross-eye (noun)	convergent strabismus (noun)
strabismus in which one or both eyes turn inward toward the nose	strabismus in which one or both eyes turn inward toward the nose