topicalize vs emphasise

topicalize and emphasise both are verbs.

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

As verbs, emphasise is a hypernym of topicalize; that is, emphasise is a word with a broader meaning than topicalize:

topicalize: emphasize by putting heavy stress on or by moving to the front of the sentence
emphasise: to stress, single out as important

Other hypernyms of topicalize include accent, accentuate, emphasize, punctuate, stress.

topicalize (verb)	emphasise (verb)
emphasize by putting heavy stress on or by moving to the front of the sentence	to stress, single out as important
	give extra weight to (a communication)