pore vs zoom in

pore is a noun but zoom in is not a noun.

Word	Noun	Adjective	Verb	Adverb
pore	Yes	No	Yes	No
zoom in	No	No	Yes	No

As verbs, zoom in is a hyponym of pore; that is, zoom in is a word with a more specific, narrower meaning than pore:

Other hyponyms of pore include absorb, engross, engulf, immerse, plunge, soak up, steep, recall, think, hear, listen, take heed.

pore (noun)	zoom in (noun)
any small opening in the skin or outer surface of an animal
a minute epidermal pore in a leaf or stem through which gases and water vapor can pass
any tiny hole admitting passage of a liquid (fluid or gas)

pore (verb)	zoom in (verb)
direct one's attention on something	examine closely; focus one's attention on