guess vs calculate

guess is a noun but calculate is not a noun.

Word	Noun	Adjective	Verb	Adverb
guess	Yes	No	Yes	No
calculate	No	No	Yes	No

As verbs, calculate is a hypernym of guess; that is, calculate is a word with a broader meaning than guess:

Other hypernyms of guess include cipher, compute, cypher, figure, reckon, work out.

guess (noun)	calculate (noun)
an estimate based on little or no information
a message expressing an opinion based on incomplete evidence

guess (verb)	calculate (verb)
expect, believe, or suppose	make a mathematical calculation or computation
judge tentatively or form an estimate of (quantities or time)	specifically design a product, event, or activity for a certain public
guess correctly; solve by guessing	judge to be probable
put forward, of a guess, in spite of possible refutation	have faith or confidence in
	predict in advance
	keep an account of