stifle vs suffocate

stifle is a noun but suffocate is not a noun.

Word	Noun	Adjective	Verb	Adverb
stifle	Yes	No	Yes	No
suffocate	No	No	Yes	No

As verbs, suffocate is a hyponym of stifle; that is, suffocate is a word with a more specific, narrower meaning than stifle:

Other hyponyms of stifle include choke.

As verbs, stifle and suffocate are synonyms defined as:

Other synonyms of stifle include asphyxiate.

As verbs, stifle and suffocate are synonyms defined as:

stifle and suffocate: impair the respiration of or obstruct the air passage of

Other synonyms of stifle include asphyxiate, choke.

stifle (noun)	suffocate (noun)
joint between the femur and tibia in a quadruped; corresponds to the human knee

stifle (verb)	suffocate (verb)
suppress or constrain so as to lessen in intensity	struggle for breath; have insufficient oxygen intake
be asphyxiated; die from lack of oxygen	feel uncomfortable for lack of fresh air
suppress in order to conceal or hide	be asphyxiated; die from lack of oxygen
impair the respiration of or obstruct the air passage of	suppress the development, creativity, or imagination of
	become stultified, suppressed, or stifled
	deprive of oxygen and prevent from breathing
	impair the respiration of or obstruct the air passage of