pick up vs pickup

pick up is not a noun while pickup is a noun.

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

pick up (noun)	pickup (noun)
	the act or process of picking up or collecting from various places
	the act of taking aboard passengers or freight
	a light truck with an open body and low sides and a tailboard
	an electro-acoustic transducer that is the part of the arm of a record player that holds the needle and that is removable
	mechanical device consisting of a light balanced arm that carries the cartridge
	anything with restorative powers
	the attribute of being capable of rapid acceleration
	a warrant to take someone into custody
	a casual acquaintance; often made in hope of sexual relationships

pick up (verb)	pickup (verb)
gain or regain energy
improve significantly; go from bad to good
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