flow vs surge

flow and surge both are nouns.

Word	Noun	Adjective	Verb	Adverb
flow	Yes	No	Yes	No
surge	Yes	No	Yes	No

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

As verbs, surge is a hyponym of flow; that is, surge is a word with a more specific, narrower meaning than flow:

flow (noun)	surge (noun)
the act of flowing or streaming; continuous progression	a sudden or abrupt strong increase
the motion characteristic of fluids (liquids or gases)	a sudden forceful flow
dominant course (suggestive of running water) of successive events or ideas	a large sea wave
any uninterrupted stream or discharge
the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause
something that resembles a flowing stream in moving continuously
the amount of fluid that flows in a given time

flow (verb)	surge (verb)
undergo menstruation	see one's performance improve
cover or swamp with water	rise rapidly
fall or flow in a certain way	rise and move, as in waves or billows
move along, of liquids	rise or move forward
move or progress freely as if in a stream	rise or heave upward under the influence of a natural force such as a wave
cause to flow
be abundantly present