harsh on vs criticise

harsh on and criticise both are verbs.

Word	Noun	Adjective	Verb	Adverb
harsh on	No	No	Yes	No
criticise	No	No	Yes	No

As verbs, criticise is a hypernym of harsh on; that is, criticise is a word with a broader meaning than harsh on:

harsh on: criticize harshly
criticise: find fault with; express criticism of; point out real or perceived flaws

Other hypernyms of harsh on include criticize, knock, pick apart.

harsh on (verb)	criticise (verb)
criticize harshly	find fault with; express criticism of; point out real or perceived flaws
	act as a critic