preserve vs pickle

preserve and pickle both are nouns.

Word	Noun	Adjective	Verb	Adverb
preserve	Yes	No	Yes	No
pickle	Yes	No	Yes	No

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

Other hyponyms of preserve include freeze-dry, conserve, dehydrate, desiccate, salt, can, put up, tin, refrigerate, cure, corn.

preserve (noun)	pickle (noun)
fruit preserved by cooking with sugar	vegetables (especially cucumbers) preserved in brine or vinegar
a reservation where animals are protected	informal terms for a difficult situation
a domain that seems to be specially reserved for someone

preserve (verb)	pickle (verb)
prevent (food) from rotting	preserve in a pickling liquid
keep in safety and protect from harm, decay, loss, or destruction
to keep up and reserve for personal or special use
keep or maintain in unaltered condition; cause to remain or last
maintain in safety from injury, harm, or danger
keep undisturbed for personal or private use for hunting, shooting, or fishing