topicalize vs linguistics

topicalize is not a noun while linguistics is a noun.

Word	Noun	Adjective	Verb	Adverb
topicalize	No	No	Yes	No
linguistics	Yes	No	No	No

topicalize (noun)	linguistics (noun)
	the scientific study of language
	the humanistic study of language and literature

topicalize (verb)	linguistics (verb)
emphasize by putting heavy stress on or by moving to the front of the sentence