As a noun playing

is an occasion on which something, such as a song or show, is played.

As a verb playing

is present participle of lang=en.

As an adjective playfull is

archaic form of lang=en.

As an adjective operating

is in operation.

As a verb operating

is .

As a noun surgery is

(medicine) a procedure involving major incisions to remove, repair, or replace a part of a body.

As nouns the difference between background and heritage

is that background is one's social heritage; what one did in the past/previously while heritage is an inheritance; property that may be inherited.

As a verb background

is to put in a position that is not prominent.

As an adjective ultimate

is final; last in a series.

As a noun ultimate

is the most basic or fundamental of a set of things.

As a verb fine is

.

As nouns the difference between memory and nostalgia

is that memory is the ability of an organism to record information about things or events with the facility of recalling them later at will while nostalgia is a longing for home or familiar surroundings; homesickness.

As nouns the difference between riddles and sayings

is that riddles is plural of lang=en while sayings is plural of saying.

As a verb riddles

is third-person singular of riddle.

As nouns the difference between clover and goldenrod

is that clover is a plant of the genus Trifolium with leaves usually divided into three (rarely four) leaflets and with white or red flowers while goldenrod is any tall-stemmed plant principally from genus Solidago (also genus: Oligoneuron), usually with clusters of small yellow flowers.

As a proper noun Clover

is {{surname|lang=en}.

As an adjective goldenrod is

of a golden-yellow colour, like that of the goldenrod plant.

As verbs the difference between dug and digged

is that dug is past tense of dig while digged is past tense of dig.

As a noun dug

is mammary gland on domestic mammal containing more than two breasts.

As nouns the difference between armband and cuff

is that armband is a bracelet while cuff is (obsolete) glove; mitten or cuff can be a blow, especially with the open hand; a box; a slap.

As a verb cuff is

to furnish with cuffs or cuff can be to hit, as a reproach, particularly with the open palm to the head; to slap.

As a noun egg

is (zoology|countable) an approximately spherical or ellipsoidal body produced by birds, snakes, insects and other animals, housing the embryo during its development.

As a verb egg

is to throw eggs at or egg can be to encourage, incite.

As an acronym cow is

(computing).