As nouns the difference between but and between

is that but is any piece of equipment used for writing with one's hand, except chalks while between is a kind of needle, shorter than a sharp, with a small rounded eye, used for making fine stitches on heavy fabrics.

As a preposition between is

in the position or interval that separates (two things), or intermediate in quantity or degree (see the usage notes below).

As verbs the difference between keep and understand

is that keep is to continue in (a course or mode of action); not to intermit or fall from; to maintain while understand is (lb) to be aware of the meaning of.

As a noun keep

is (obsolete) care, notice.

As adjectives the difference between robust and stocky

is that robust is evincing strength; indicating vigorous health; strong; sinewy; muscular; vigorous; sound; as, a robust body; robust youth; robust health while stocky is (of a person or an animal) sturdy; solidly built; heavy and compact.

As verbs the difference between cars and bus

is that cars is to break while bus is .

As nouns the difference between processing and handle

is that processing is the action of the verb to process while handle is a part of an object which is held in the hand when used or moved, as the haft of a sword, the knob of a door, the bail of a kettle, etc or handle can be (slang) a name, nickname or pseudonym.

As verbs the difference between processing and handle

is that processing is while handle is to use the hands.

In lang=en terms the difference between tarnish and fog

is that tarnish is to soil, sully, damage or compromise while fog is to pasture cattle on the fog, or aftergrass, of; to eat off the fog from.

As nouns the difference between tarnish and fog

is that tarnish is oxidation or discoloration, especially of a decorative metal exposed to air while fog is (label) a thick cloud that forms near the ground; the obscurity of such a cloud or fog can be a new growth of grass appearing on a field that has been mowed or grazed.

As verbs the difference between tarnish and fog

is that tarnish is to oxidize or discolor due to oxidation while fog is to become covered with or as if with fog or fog can be to pasture cattle on the fog, or aftergrass, of; to eat off the fog from.

As a noun perineum

is perineum.

As an adjective fusty is

moldy or musty.

As nouns the difference between cognate and rate

is that cognate is one of a number of things allied in origin or nature while rate is rot (process of something decaying or rotting ).

As an adjective cognate

is allied by blood; kindred by birth; specifically (legal) related on the mother's side.

As nouns the difference between mustache and hamburger

is that mustache is a growth of facial hair between the nose and the upper lip while hamburger is a person from hamburg.

As nouns the difference between burger and mustache

is that burger is citizen, burgher; legally recognized inhabitant of a city or state while mustache is a growth of facial hair between the nose and the upper lip.