focus vs recall

focus and recall both are nouns.

Word	Noun	Adjective	Verb	Adverb
focus	Yes	No	Yes	No
recall	Yes	No	Yes	No

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

focus: direct one's attention on something
recall: cause one's (or someone else's) thoughts or attention to return from a reverie or digression

Other hyponyms of focus include absorb, engross, engulf, immerse, plunge, soak up, steep, think, zoom in, hear, listen, take heed.

focus (noun)	recall (noun)
maximum clarity or distinctness of an image rendered by an optical system	the act of removing an official by petition
maximum clarity or distinctness of an idea	the process of remembering (especially the process of recovering information by mental effort)
the concentration of attention or energy on something	a call to return
a fixed reference point on the concave side of a conic section	a bugle call that signals troops to return
a point of convergence of light (or other radiation) or a point from which it diverges	a request by the manufacturer of a defective product to return the product (as for replacement or repair)
a central point or locus of an infection in an organism
special emphasis attached to something

focus (verb)	recall (verb)
become focussed or come into focus	recall knowledge from memory; have a recollection
put (an image) into focus	cause one's (or someone else's) thoughts or attention to return from a reverie or digression
direct one's attention on something	go back to something earlier
bring into focus or alignment; to converge or cause to converge; of ideas or emotions	summon to return
cause to converge on or toward a central point	cause to be returned
	make unavailable; bar from sale or distribution
	bring to mind