support vs brace

support and brace both are nouns.

Word	Noun	Adjective	Verb	Adverb
support	Yes	No	Yes	No
brace	Yes	No	Yes	No

As nouns, brace is a hyponym of support; that is, brace is a word with a more specific, narrower meaning than support:

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

Other hyponyms of support include scaffold, block, carry, chock, buoy, buoy up, pole, bracket, underpin, prop, prop up, shore, shore up, truss.

support (noun)	brace (noun)
aiding the cause or policy or interests of	a structural member used to stiffen a framework
the act of bearing the weight of or strengthening	a carpenter's tool having a crank handle for turning and a socket to hold a bit for boring
documentary validation	an appliance that corrects dental irregularities
a military operation (often involving new supplies of men and materiel) to strengthen a military force or aid in the performance of its mission	a support that steadies or strengthens something else
the activity of providing for or maintaining by supplying with money or necessities	elastic straps that hold trousers up
any device that bears the weight of another thing	a rope on a square-rigged ship that is used to swing a yard about and secure it
supporting structure that holds up or provides a foundation	either of two punctuation marks ({ or }) used to enclose textual material
something providing immaterial assistance to a person or cause or interest	a set of two similar things considered as a unit
a musical part (vocal or instrumental) that supports or provides background for other musical parts	two items of the same kind
the financial means whereby one lives
financial resources provided to make some project possible

support (verb)	brace (verb)
establish or strengthen as with new evidence or facts	cause to be alert and energetic
put up with something or somebody unpleasant	support by bracing
adopt as a belief	support or hold steady and make steadfast, with or as if with a brace
argue or speak in defense of	prepare (oneself), often but not necessarily for something unpleasant or difficult
be a regular customer or client of
be the physical support of; carry the weight of
play a subordinate role to (another performer)
support materially or financially
give moral or psychological support, aid, or courage to
be behind; approve of
support with evidence or authority or make more certain or confirm