seize vs pick up

seize and pick up both are verbs.

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

As verbs, pick up is a hyponym of seize; that is, pick up is a word with a more specific, narrower meaning than seize:

seize (verb)	pick up (verb)
capture the attention or imagination of	gain or regain energy
affect	improve significantly; go from bad to good
take into your hands deliberately	lift out or reflect from a background
take or capture by force	get to know or become aware of, usually accidentally
hook by a pull on the line	eat by pecking at, like a bird
take possession of by force, as after an invasion	take into custody
take temporary possession of as a security, by legal authority	take up by hand
seize and take control without authority and possibly with force; take as one's right or possession	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