choke vs obstruct

choke is a noun but obstruct is not a noun.

Word	Noun	Adjective	Verb	Adverb
choke	Yes	No	Yes	No
obstruct	No	No	Yes	No

As verbs, obstruct is a hypernym of choke; that is, obstruct is a word with a broader meaning than choke:

Other hypernyms of choke include block, close up, impede, jam, obturate, occlude.

As verbs, obstruct is a hypernym of choke; that is, obstruct is a word with a broader meaning than choke:

Other hypernyms of choke include block, close up, impede, jam, obturate, occlude.

choke (noun)	obstruct (noun)
a valve that controls the flow of air into the carburetor of a gasoline engine
a coil of low resistance and high inductance used in electrical circuits to pass direct current and attenuate alternating current

choke (verb)	obstruct (verb)
breathe with great difficulty, as when experiencing a strong emotion	block passage through
cause to retch or choke	shut out from view or get in the way so as to hide from sight
struggle for breath; have insufficient oxygen intake	hinder or prevent the progress or accomplishment of
constrict (someone's) throat and keep from breathing
reduce the air supply
pass from physical life and lose all bodily attributes and functions necessary to sustain life
suppress the development, creativity, or imagination of
become stultified, suppressed, or stifled
be too tight; rub or press
become or cause to become obstructed
wring the neck of
impair the respiration of or obstruct the air passage of
check or slow down the action or effect of
fail to perform adequately due to tension or agitation