function

As an adjective important

is important.

As a noun function is

what something does or is used for.

As a verb function is

to have a function.

As nouns the difference between function and faculty

is that function is what something does or is used for while faculty is the scholarly staff at colleges or universities, as opposed to the students or support staff.

As a verb function

is to have a function.

As nouns the difference between operand and function

is that operand is (mathematics|computing) a quantity to which an operator is applied (in $3\; -\; x$, the operands of the subtraction operator are 3 and $x$) while function is what something does or is used for.

As a verb function is

to have a function.

As nouns the difference between formulation and function

is that formulation is the act, process, or result of formulating or reducing to a formula while function is what something does or is used for.

As a verb function is

to have a function.

As a preposition mot

is with.

As a noun function is

what something does or is used for.

As a verb function is

to have a function.

As nouns the difference between uses and function

is that uses is plural of lang=en while function is what something does or is used for.

As verbs the difference between uses and function

is that uses is third-person singular of use while function is to have a function.

As nouns the difference between function and festival

is that function is what something does or is used for while festival is an event or community gathering, usually staged by a local community, which centers on some theme, sometimes on some unique aspect of the community.

As a verb function

is to have a function.

As an adjective festival is

pertaining to a feast or feast-day. (Now only as the noun used attributively..

As nouns the difference between validity and function

is that validity is the state of being valid, authentic or genuine while function is what something does or is used for.

As a verb function is

to have a function.