go vs knock

go and knock both are nouns.

Word	Noun	Adjective	Verb	Adverb
go	Yes	Yes	Yes	No
knock	Yes	No	Yes	No

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

go (noun)	knock (noun)
a board game for two players who place counters on a grid; the object is to surround and so capture the opponent's counters	the act of hitting vigorously
a usually brief attempt	negative criticism
street names for methylenedioxymethamphetamine	a vigorous blow
a time period for working (after which you will be relieved by someone else)	the sound of knocking (as on a door or in an engine or bearing)
	a bad experience

go (adjective)	knock (adjective)
functioning correctly and ready for action

go (verb)	knock (verb)
pass from physical life and lose all bodily attributes and functions necessary to sustain life	find fault with; express criticism of; point out real or perceived flaws
follow a certain course	knock against with force or violence
progress by being changed	rap with the knuckles
stop operating or functioning	deliver a sharp blow or push
enter or assume a certain state or condition	make light, repeated taps on a surface
be abolished or discarded	sound like a car engine that is firing too early
give support (to) or make a choice (of) one out of a group or number
have a turn; make one's move in a game
to be spent or finished
be spent
perform as expected when applied
go through in search of something; search through someone's belongings in an unauthorized way
change location; move, travel, or proceed, also metaphorically
move away from a place into another direction
begin or set in motion
make a certain noise or sound
follow a procedure or take a course
stretch out over a distance, space, time, or scope; run or extend between two points or beyond a certain point
have a particular form
pass, fare, or elapse; of a certain state of affairs or action
be in the right place or situation
be the right size or shape; fit correctly or as desired
be awarded; be allotted
be or continue to be in a certain condition
lead, extend, or afford access
be ranked or compare
blend or harmonize
be sounded, played, or expressed
be contained in
continue to live and avoid dying