lexicologist vs compiler

lexicologist and compiler both are nouns.

Word	Noun	Adjective	Verb	Adverb
lexicologist	Yes	No	No	No
compiler	Yes	No	No	No

As nouns, compiler is a hypernym of lexicologist; that is, compiler is a word with a broader meaning than lexicologist:

lexicologist: a compiler or writer of a dictionary; a student of the lexical component of language
compiler: a person who compiles information (as for reference purposes)

Other hypernyms of lexicologist include linguist, linguistic scientist.

lexicologist (noun)	compiler (noun)
a compiler or writer of a dictionary; a student of the lexical component of language	(computer science) a program that decodes instructions written in a higher order language and produces an assembly language program
	a person who compiles information (as for reference purposes)