call on vs call in

call on and call in both are verbs.

Word	Noun	Adjective	Verb	Adverb
call on	No	No	Yes	No
call in	No	No	Yes	No

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

Other hypernyms of call on include call, visit.

call on (verb)	call in (verb)
have recourse to or make an appeal or request for help or information to	make a phone call
to visit someone, usually for a short time	summon to a particular activity or employment
	summon to enter
	cause to be returned
	demand payment of (a loan)
	pay a brief visit
	take a player out of a game in order to exchange for another player