dehydration vs extraction

dehydration and extraction both are nouns.

Word	Noun	Adjective	Verb	Adverb
dehydration	Yes	No	No	No
extraction	Yes	No	No	No

As nouns, extraction is a hypernym of dehydration; that is, extraction is a word with a broader meaning than dehydration:

dehydration: the process of extracting moisture
extraction: the process of obtaining something from a mixture or compound by chemical or physical or mechanical means

dehydration (noun)	extraction (noun)
the process of extracting moisture	the action of taking out something (especially using effort or force)
dryness resulting from the removal of water	properties attributable to your ancestry
depletion of bodily fluids	the process of obtaining something from a mixture or compound by chemical or physical or mechanical means