As a noun function

is what something does or is used for.

As a verb function

is to have a function.

As an adjective superadditive is

such that the of a sum is at least the sum of the images of the summands.

As a noun image

is an optical or other representation of a real object; a graphic; a picture.

As a verb image

is to represent symbolically.

As an adjective superadditive is

such that the of a sum is at least the sum of the images of the summands.

As a noun sum

is a quantity obtained by addition or aggregation.

As a verb sum

is to add together.

As an adjective superadditive is

such that the of a sum is at least the sum of the images of the summands.

As a noun summand

is something which is added or summed; for example in 1+2=3 the summands are 1 and 2 which form the sum, 3.

As an adjective superadditive is

such that the of a sum is at least the sum of the images of the summands.

Superadditive is a related term of superadditivity.

As a noun superadditivity

is the state of being superadditive.

As an adjective superadditive is

such that the of a sum is at least the sum of the images of the summands.

As nouns the difference between statement and superadditivity

is that statement is a declaration or remark while superadditivity is the state of being superadditive.

As a verb statement

is to provide an official document of a proposition, especially in the UK a Statement of Special Educational Needs.

As nouns the difference between function and superadditivity

is that function is what something does or is used for while superadditivity is the state of being superadditive.

As a verb function

is to have a function.

As proper nouns the difference between cola and shasta

is that cola is comp.os.linux.advocacy (a Usenet newsgroup while Shasta is a brand of cola.

As a noun cola

is the kola plant, genus Cola, famous for its nut, or one of these nuts.

As nouns the difference between quarry and quar

is that quarry is a site for mining stone, limestone or slate or quarry can be an animal which is hunted, notably mammal or bird or quarry can be a diamond-shaped tile or pane, notably of glass or stone while quar is (obsolete) a quarry.

As a verb quarry

is to obtain (mine) stone by extraction from a quarry or quarry can be to secure prey; to prey, as a vulture or harpy.

As a noun function

is what something does or is used for.

As a verb function

is to have a function.

As an adjective subadditive is

(of a function) such that the image of a sum is at most the sum of the images of the summands.