build up vs build

build up is not a noun while build is a noun.

Word	Noun	Adjective	Verb	Adverb
build up	No	No	Yes	No
build	Yes	No	Yes	No

As verbs, build up and build are synonyms defined as:

Other synonyms of build up include progress, work up.

As verbs, build up and build are synonyms defined as:

Other synonyms of build up include ramp up, work up.

build up (noun)	build (noun)
	constitution of the human body
	alternative names for the body of a human being

build up (verb)	build (verb)
form or accumulate steadily	form or accumulate steadily
enlarge, develop, or increase by degrees or in stages	improve the cleansing action of
change the use of and make available or usable	bolster or strengthen
bolster or strengthen	develop and grow
prepare oneself for a military confrontation	found or ground
	make by combining materials and parts
	give form to, according to a plan
	build or establish something abstract
	be engaged in building
	order, supervise, or finance the construction of