immerse vs swallow up

immerse and swallow up both are verbs.

Word	Noun	Adjective	Verb	Adverb
immerse	No	No	Yes	No
swallow up	No	No	Yes	No

As verbs, immerse and swallow up are synonyms defined as:

immerse and swallow up: enclose or envelop completely, as if by swallowing

Other synonyms of immerse include bury, eat up, swallow.

immerse (verb)	swallow up (verb)
devote (oneself) fully to	enclose or envelop completely, as if by swallowing
cause to be immersed
thrust or throw into
enclose or envelop completely, as if by swallowing