fraction vs reckon

fraction is a noun but reckon is not a noun.

Word	Noun	Adjective	Verb	Adverb
fraction	Yes	No	Yes	No
reckon	No	No	Yes	No

As verbs, reckon is a hypernym of fraction; that is, reckon is a word with a broader meaning than fraction:

Other hypernyms of fraction include calculate, cipher, compute, cypher, figure, work out.

fraction (noun)	reckon (noun)
a small part or item forming a piece of a whole
the quotient of two rational numbers
a component of a mixture that has been separated by a fractional process

fraction (verb)	reckon (verb)
perform a division	deem to be
	make a mathematical calculation or computation
	expect, believe, or suppose
	judge to be probable
	have faith or confidence in
	take account of