suffocate vs close up

suffocate and close up both are verbs.

Word	Noun	Adjective	Verb	Adverb
suffocate	No	No	Yes	No
close up	No	No	Yes	Yes

As verbs, close up is a hypernym of suffocate; that is, close up is a word with a broader meaning than suffocate:

Other hypernyms of suffocate include block, impede, jam, obstruct, obturate, occlude.

suffocate (verb)	close up (verb)
struggle for breath; have insufficient oxygen intake	refuse to talk or stop talking; fall silent
feel uncomfortable for lack of fresh air	block passage through
be asphyxiated; die from lack of oxygen	unite or bring into contact or bring together the edges of
suppress the development, creativity, or imagination of	cease to operate or cause to cease operating
become stultified, suppressed, or stifled
deprive of oxygen and prevent from breathing
impair the respiration of or obstruct the air passage of

suffocate (adverb)	close up (adverb)
	very close