converging lens vs convex lens

converging lens and convex lens both are nouns.

Word	Noun	Adjective	Verb	Adverb
converging lens	Yes	No	No	No
convex lens	Yes	No	No	No

As nouns, converging lens and convex lens are synonyms defined as:

converging lens and convex lens: lens such that a beam of light passing through it is brought to a point or focus

converging lens (noun)	convex lens (noun)
lens such that a beam of light passing through it is brought to a point or focus	lens such that a beam of light passing through it is brought to a point or focus