number vs total

number and total both are nouns.

Word	Noun	Adjective	Verb	Adverb
number	Yes	No	Yes	No
total	Yes	Yes	Yes	No

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

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

As verbs, number and total are synonyms defined as:

Other synonyms of number include add up, amount, come.

number (noun)	total (noun)
an item of clothing	the whole amount
the property possessed by a sum or total or indefinite quantity of units or individuals	a quantity obtained by the addition of a group of numbers
a clothing measurement
one of a series published periodically
a symbol used to represent a number
a numeral or string of numerals that is used for identification and may be attached to accounts, memberships, etc.
the number is used in calling a particular telephone
a short performance that is part of a longer program
the grammatical category for the forms of nouns and pronouns and verbs that are used depending on the number of entities involved (singular or dual or plural)
a numbered item in a series
a select company of people
a concept of quantity involving zero and units

number (adjective)	total (adjective)
	constituting the full quantity or extent; complete
	complete in extent or degree and in every particular

number (verb)	total (verb)
place a limit on the number of	damage beyond the point of repair
determine the number or amount of	determine the sum of
enumerate	add up in number or quantity
give numbers to
add up in number or quantity
put into a group