die vs suffocate

die is a noun but suffocate is not a noun.

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

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

die: pass from physical life and lose all bodily attributes and functions necessary to sustain life
suffocate: be asphyxiated; die from lack of oxygen

Other hyponyms of die include abort, asphyxiate, stifle, buy it, pip out, drown, predecease, famish, starve, fall, succumb, yield.

die (noun)	suffocate (noun)
a small cube with 1 to 6 spots on the six faces; used in gambling to generate random numbers
a device used for shaping metal
a cutting tool that is fitted into a diestock and used for cutting male (external) screw threads on screws or bolts or pipes or rods

die (verb)	suffocate (verb)
pass from physical life and lose all bodily attributes and functions necessary to sustain life	struggle for breath; have insufficient oxygen intake
disappear or come to an end	feel uncomfortable for lack of fresh air
suffer spiritual death; be damned (in the religious sense)	be asphyxiated; die from lack of oxygen
stop operating or functioning	suppress the development, creativity, or imagination of
lose sparkle or bouquet	become stultified, suppressed, or stifled
to be on base at the end of an inning, of a player	deprive of oxygen and prevent from breathing
cut or shape with a die	impair the respiration of or obstruct the air passage of
be brought to or as if to the point of death by an intense emotion such as embarrassment, amusement, or shame
languish as with love or desire
feel indifferent towards
suffer or face the pain of death