concentrate vs engulf

concentrate is a noun but engulf is not a noun.

Word	Noun	Adjective	Verb	Adverb
concentrate	Yes	No	Yes	No
engulf	No	No	Yes	No

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

Other hyponyms of concentrate include absorb, engross, immerse, plunge, soak up, steep, recall, think, zoom in, hear, listen, take heed.

concentrate (noun)	engulf (noun)
a concentrated example of something
a concentrated form of a foodstuff; the bulk is reduced by removing water
the desired mineral that is left after impurities have been removed from mined ore

concentrate (verb)	engulf (verb)
cook until very little liquid is left	devote (oneself) fully to
make denser, stronger, or purer	flow over or cover completely
make central
be cooked until very little liquid is left
make more concise
compress or concentrate
direct one's attention on something
draw together or meet in one common center