asphyxiate vs stifle

asphyxiate is not a noun while stifle is a noun.

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

As verbs, asphyxiate and stifle are synonyms defined as:

Other synonyms of asphyxiate include suffocate.

As verbs, asphyxiate and stifle are synonyms defined as:

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

Other synonyms of asphyxiate include choke, suffocate.

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

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