concentrate on vs touch

concentrate on is not a noun while touch is a noun.

Word	Noun	Adjective	Verb	Adverb
concentrate on	No	No	Yes	No
touch	Yes	No	Yes	No

As verbs, touch is a hypernym of concentrate on; that is, touch is a word with a broader meaning than concentrate on:

Other hypernyms of concentrate on include bear on, come to, concern, have to do with, pertain, refer, relate, touch on.

concentrate on (noun)	touch (noun)
	the act of putting two things together with no space between them
	the feel of mechanical action
	a distinguishing style
	the faculty by which external objects or forces are perceived through contact with the body (especially the hands)
	the sensation produced by pressure receptors in the skin
	deftness in handling matters
	the act of soliciting money (as a gift or loan)
	a suggestion of some quality
	a communicative interaction
	the event of something coming in contact with the body
	a slight but appreciable amount
	a slight attack of illness

concentrate on (verb)	touch (verb)
center upon	have an effect upon
	color lightly
	comprehend
	make a more or less disguised reference to
	consume
	make physical contact with, come in contact with
	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