count vs tally

count and tally both are nouns.

Word	Noun	Adjective	Verb	Adverb
count	Yes	No	Yes	No
tally	Yes	No	Yes	No

As nouns, count and tally are synonyms defined as:

count and tally: the act of counting; reciting numbers in ascending order

Other synonyms of count include counting, enumeration, numeration, reckoning.

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

Other hyponyms of count include recount, miscount, census, add, add together, add up, sum, sum up, summate, tot, tot up, total, tote up.

count (noun)	tally (noun)
the act of counting; reciting numbers in ascending order	the act of counting; reciting numbers in ascending order
a nobleman (in various countries) having rank equal to a British earl	a score in baseball made by a runner touching all four bases safely
the total number counted	a bill for an amount due

count (verb)	tally (verb)
include as if by counting	determine the sum of
have faith or confidence in	keep score, as in games
take account of	gain points in a game
determine the number or amount of	be compatible, similar or consistent; coincide in their characteristics
name or recite the numbers in ascending order
show consideration for; take into account
have weight; have import, carry weight
put into a group
have a certain value or carry a certain weight