select vs pick out

select is an adjective but pick out is not an adjective.

Word	Noun	Adjective	Verb	Adverb
select	No	Yes	Yes	No
pick out	No	No	Yes	No

As verbs, select and pick out are synonyms defined as:

select and pick out: pick out, select, or choose from a number of alternatives

Other synonyms of select include choose, take.

select (adjective)	pick out (adjective)
selected or chosen for special qualifications
of superior grade

select (verb)	pick out (verb)
pick out, select, or choose from a number of alternatives	pick out, select, or choose from a number of alternatives
	detect with the senses