call for vs require

call for and require both are verbs.

Word	Noun	Adjective	Verb	Adverb
call for	No	No	Yes	No
require	No	No	Yes	No

As verbs, call for and require are synonyms defined as:

Other synonyms of call for include ask, demand, involve, necessitate, need, postulate, take.

call for (verb)	require (verb)
request the participation or presence of	make someone do something
express the need or desire for	consider obligatory; request and expect
gather or collect	have need of
require as useful, just, or proper	require as useful, just, or proper