bow vs motion

bow and motion both are nouns.

Word	Noun	Adjective	Verb	Adverb
bow	Yes	No	Yes	No
motion	Yes	No	Yes	No

As nouns, motion is a hypernym of bow; that is, motion is a word with a broader meaning than bow:

bow: bending the head or body or knee as a sign of reverence or submission or shame or greeting
motion: the use of movements (especially of the hands) to communicate familiar or prearranged signals

Other hypernyms of bow include reverence, gesture.

As verbs, motion is a hypernym of bow; that is, motion is a word with a broader meaning than bow:

Other hypernyms of bow include gesticulate, gesture.

bow (noun)	motion (noun)
a stroke with a curved piece of wood with taut horsehair strands that is used in playing stringed instruments	a change of position that does not entail a change of location
a slightly curved piece of resilient wood with taut horsehair strands; used in playing certain stringed instruments	the act of changing location from one place to another
a weapon for shooting arrows, composed of a curved piece of resilient wood with a taut cord to propel the arrow	the use of movements (especially of the hands) to communicate familiar or prearranged signals
a knot with two loops and loose ends; used to tie shoelaces	a formal proposal for action made to a deliberative assembly for discussion and vote
a decorative interlacing of ribbons	a natural event that involves a change in the position or location of something
something curved in shape	an optical illusion of motion produced by viewing a rapid succession of still pictures of a moving object
front part of a vessel or aircraft	a state of change
an appearance by actors or performers at the end of the concert or play in order to acknowledge the applause of the audience
bending the head or body or knee as a sign of reverence or submission or shame or greeting

bow (verb)	motion (verb)
bend one's knee or body, or lower one's head	show, express or direct through movement
yield to another's wish or opinion
bend the head or the upper part of the body in a gesture of respect or greeting
bend one's back forward from the waist on down
play on a stringed instrument with a bow