foot vs beat

foot and beat both are nouns.

Word	Noun	Adjective	Verb	Adverb
foot	Yes	No	Yes	No
beat	Yes	Yes	Yes	No

As nouns, beat is a hypernym of foot; that is, beat is a word with a broader meaning than foot:

foot: (prosody) a group of 2 or 3 syllables forming the basic unit of poetic rhythm
beat: (prosody) the accent in a metrical foot of verse

Other hypernyms of foot include cadence, measure, meter, metre.

foot (noun)	beat (noun)
travel by walking	the act of beating to windward; sailing as close as possible to the direction from which the wind is blowing
any of various organs of locomotion or attachment in invertebrates	a stroke or blow
the pedal extremity of vertebrates other than human beings	a regular rate of repetition
lowest support of a structure	the basic rhythmic unit in a piece of music
a support resembling a pedal extremity	(prosody) the accent in a metrical foot of verse
the part of the leg of a human being below the ankle joint	the rhythmic contraction and expansion of the arteries with each beat of the heart
(prosody) a group of 2 or 3 syllables forming the basic unit of poetic rhythm	the sound of stroke or blow
an army unit consisting of soldiers who fight on foot	a regular route for a sentry or policeman
the lower part of anything	a member of the beat generation; a nonconformist in dress and behavior
a member of a surveillance team who works on foot or rides as a passenger	a single pulsation of an oscillation produced by adding two waves of different frequencies; has a frequency equal to the difference between the two oscillations
a linear unit of length equal to 12 inches or a third of a yard

foot (adjective)	beat (adjective)
	very tired

foot (verb)	beat (verb)
add a column of numbers	wear out completely
walk	be a mystery or bewildering to
pay for something	come out better in a competition, race, or conflict
	beat through cleverness and wit
	hit repeatedly
	give a beating to; subject to a beating, either as a punishment or as an act of aggression
	stir vigorously
	strike (a part of one's own body) repeatedly, as in great emotion or in accompaniment to music
	strike (water or bushes) repeatedly to rouse animals for hunting
	shape by beating
	make by pounding or trampling
	produce a rhythm by striking repeatedly
	move rhythmically
	sail with much tacking or with difficulty
	move with a flapping motion
	indicate by beating, as with the fingers or drumsticks
	move with a thrashing motion
	move with or as if with a regular alternating motion
	make a rhythmic sound
	make a sound like a clock or a timer
	glare or strike with great intensity
	avoid paying
	be superior