outpouring vs geyser

outpouring and geyser both are nouns.

Word	Noun	Adjective	Verb	Adverb
outpouring	Yes	No	No	No
geyser	Yes	No	Yes	No

As nouns, geyser is a hyponym of outpouring; that is, geyser is a word with a more specific, narrower meaning than outpouring:

Other hyponyms of outpouring include Fountain of Youth, hot spring, thermal spring.

outpouring (noun)	geyser (noun)
a large flow	a spring that discharges hot water and steam
the rapid and continuous delivery of linguistic communication (spoken or written)
the pouring forth of a fluid
a sudden rapid flow (as of water)
a natural flow of ground water

outpouring (verb)	geyser (verb)
	to overflow like a geyser