touch vs brush

touch and brush both are nouns.

Word	Noun	Adjective	Verb	Adverb
touch	Yes	No	Yes	No
brush	Yes	No	Yes	No

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

Other hyponyms of touch include light touch, stroke.

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

touch (noun)	brush (noun)
the act of putting two things together with no space between them	a minor short-term fight
the feel of mechanical action	the act of brushing your hair
a distinguishing style	the act of brushing your teeth
the faculty by which external objects or forces are perceived through contact with the body (especially the hands)	contact with something dangerous or undesirable
the sensation produced by pressure receptors in the skin	a bushy tail or part of a bushy tail (especially of the fox)
deftness in handling matters	an implement that has hairs or bristles firmly set into a handle
the act of soliciting money (as a gift or loan)	conducts current between rotating and stationary parts of a generator or motor
a suggestion of some quality	momentary contact
a communicative interaction	a dense growth of bushes
the event of something coming in contact with the body
a slight but appreciable amount
a slight attack of illness

touch (verb)	brush (verb)
have an effect upon	remove with or as if with a brush
color lightly	touch lightly and briefly
comprehend	rub with a brush, or as if with a brush
make a more or less disguised reference to	clean with a brush
consume	cover by brushing
make physical contact with, come in contact with	sweep across or over
be in direct physical contact with; make contact
tamper with
cause to be in brief contact with
affect emotionally
perceive via the tactile sense
deal with; usually used with a form of negation
be relevant to
to extend as far as
be equal to in quality or ability