don

As nouns the difference between fellow and don

is that fellow is (lb) a colleague or partner while don is (science) (dissolved organic nitrogen).

As an adjective fellow

is having common characteristics; being of the same kind, or in the same group.

As a verb fellow

is to suit with; to pair with; to match.

As nouns the difference between don and null

is that don is (science) (dissolved organic nitrogen) while null is zero, nil; the cardinal number before einn.

As a letter s

is the letter s with a.

As a noun don is

(science) (dissolved organic nitrogen).

As nouns the difference between don and services

is that don is (science) (dissolved organic nitrogen) while services is .

As a noun don

is (science) (dissolved organic nitrogen).

As a letter w is

the twenty-third letter of the.

As a symbol w is

(label) symbol for tungsten.

As nouns the difference between don and support

is that don is (science) (dissolved organic nitrogen) while support is something which supports often used attributively, as a complement or supplement to.

As a verb support is

(senseid)to keep from falling.

As nouns the difference between don and peter

is that don is (science) (dissolved organic nitrogen) while peter is (hypocoristic slang ) the penis.

As a verb peter is

(most often used in the phrase peter out) to dwindle; to trail off; to diminish to nothing.

As an acronym put

is (software|testing).

As an initialism put

is (electronics).

As a noun don is

(science) (dissolved organic nitrogen).

As nouns the difference between alfredo and don

is that alfredo is (cooking) while don is (science) (dissolved organic nitrogen).

As nouns the difference between don and act

is that don is (science) (dissolved organic nitrogen) while act is (countable) something done, a deed.

As a verb act is

to do something.