require vs call for

require and call for both are verbs.

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

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

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

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