pick up vs gather up

pick up and gather up both are verbs.

Word	Noun	Adjective	Verb	Adverb
pick up	No	No	Yes	No
gather up	No	No	Yes	No

As verbs, pick up and gather up are synonyms defined as:

Other synonyms of pick up include lift up.

As verbs, pick up and gather up are synonyms defined as:

Other synonyms of pick up include call for, collect.

pick up (verb)	gather up (verb)
gain or regain energy	take and lift upward
improve significantly; go from bad to good	gather or collect
lift out or reflect from a background
get to know or become aware of, usually accidentally
eat by pecking at, like a bird
take into custody
take up by hand
fill with high spirits; fill with optimism
give a passenger or a hitchhiker a lift
take and lift upward
perceive with the senses quickly, suddenly, or momentarily
register (perceptual input)
buy casually or spontaneously
gather or collect
get in addition, as an increase
meet someone for sexual purposes