plant vs pass along

plant is a noun but pass along is not a noun.

As verbs, pass along is a hypernym of plant; that is, pass along is a word with a broader meaning than plant:

Other hypernyms of plant include pass, pass on, communicate, put across.

plant (noun)	pass along (noun)
buildings for carrying on industrial labor
(botany) a living organism lacking the power of locomotion
an actor situated in the audience whose acting is rehearsed but seems spontaneous to the audience
something planted secretly for discovery by another

plant (verb)	pass along (verb)
put or set (seeds, seedlings, or plants) into the ground	transmit information
fix or set securely or deeply
set up or lay the groundwork for
place into a river
place something or someone in a certain position in order to secretly observe or deceive
put firmly in the mind