stifle vs repress

stifle is a noun but repress is not a noun.

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

As verbs, stifle and repress are synonyms defined as:

Other synonyms of stifle include muffle, smother, strangle.

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

stifle (verb)	repress (verb)
suppress or constrain so as to lessen in intensity	block the action of
be asphyxiated; die from lack of oxygen	put out of one's consciousness
suppress in order to conceal or hide	suppress in order to conceal or hide
impair the respiration of or obstruct the air passage of	put down by force or intimidation
	impede or hinder the natural development or self-expression of