make sense vs add up

make sense and add up both are verbs.

Word	Noun	Adjective	Verb	Adverb
make sense	No	No	Yes	No
add up	No	No	Yes	No

As verbs, make sense and add up are synonyms defined as:

make sense (verb)	add up (verb)
be reasonable or logical or comprehensible	determine the sum of
	be reasonable or logical or comprehensible
	to measure up to in kind or quality
	add up in number or quantity