strangle vs stifle

strangle is not a noun while stifle is a noun.

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

As verbs, stifle is a hypernym of strangle; that is, stifle is a word with a broader meaning than strangle:

Other hypernyms of strangle include asphyxiate, suffocate.

As verbs, strangle and stifle are synonyms defined as:

Other synonyms of strangle include muffle, repress, smother.

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

strangle (verb)	stifle (verb)
constrict (someone's) throat and keep from breathing	suppress or constrain so as to lessen in intensity
struggle for breath; have insufficient oxygen intake	be asphyxiated; die from lack of oxygen
prevent the progress or free movement of	suppress in order to conceal or hide
die from strangulation	impair the respiration of or obstruct the air passage of
kill by squeezing the throat of so as to cut off the air
suppress in order to conceal or hide