compare vs tell apart

compare is a noun but tell apart is not a noun.

Word	Noun	Adjective	Verb	Adverb
compare	Yes	No	Yes	No
tell apart	No	No	Yes	No

compare (noun)	tell apart (noun)
qualities that are comparable

compare (verb)	tell apart (verb)
examine and note the similarities or differences of	mark as different
consider or describe as similar, equal, or analogous	detect with the senses
to form the comparative or superlative form on an adjective or adverb
be comparable