stifle vs asphyxiate

stifle is a noun but asphyxiate is not a noun.

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

As verbs, stifle and asphyxiate are synonyms defined as:

Other synonyms of stifle include suffocate.

As verbs, stifle and asphyxiate are synonyms defined as:

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

Other synonyms of stifle include choke, suffocate.

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

stifle (verb)	asphyxiate (verb)
suppress or constrain so as to lessen in intensity	be asphyxiated; die from lack of oxygen
be asphyxiated; die from lack of oxygen	deprive of oxygen and prevent from breathing
suppress in order to conceal or hide	impair the respiration of or obstruct the air passage of
impair the respiration of or obstruct the air passage of