goodbye

As nouns the difference between goodbye and goodnight

is that goodbye is an utterance of goodbye, the wishing of farewell to someone while goodnight is a farewell said in the evening or before going to sleep.

As an interjection goodbye

is ; a formula used to another person or persons when the speaker, writer, or person addressed is departing.

As nouns the difference between goodbye and smile

is that goodbye is an utterance of goodbye, the wishing of farewell to someone while smile is a facial expression comprised by flexing the muscles of both ends of one's mouth, often showing the front teeth, without vocalisation, and in humans is a common involuntary or voluntary expression of happiness, pleasure, amusement or anxiety.

As an interjection goodbye

is ; a formula used to another person or persons when the speaker, writer, or person addressed is departing.

As a verb smile is

(ambitransitive) to have (a smile) on one's face.

As an interjection goodbye

is ; a formula used to another person or persons when the speaker, writer, or person addressed is departing.

As a noun goodbye

is an utterance of goodbye, the wishing of farewell to someone.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between goodbye and long

is that goodbye is an utterance of goodbye, the wishing of farewell to someone while long is hair; fur; coat.

As an interjection goodbye

is ; a formula used to another person or persons when the speaker, writer, or person addressed is departing.

As nouns the difference between sendoff and goodbye

is that sendoff is a party for a person (ie a fellow employee) who is leaving; a farewell party while goodbye is an utterance of goodbye, the wishing of farewell to someone.

As an interjection goodbye is

; a formula used to another person or persons when the speaker, writer, or person addressed is departing.

As nouns the difference between goodbye and null

is that goodbye is an utterance of goodbye, the wishing of farewell to someone while null is zero, nil; the cardinal number before einn.

As an interjection goodbye

is ; a formula used to another person or persons when the speaker, writer, or person addressed is departing.

As nouns the difference between goodbye and cup

is that goodbye is an utterance of goodbye, the wishing of farewell to someone while cup is cup.

As an interjection goodbye

is ; a formula used to another person or persons when the speaker, writer, or person addressed is departing.

As a verb cup is

to not attend a course, a class without permission of the teacher or cup can be to temporarily or permanently cease to provide (electricity or water supply) or cup can be to switch off (a breaker or fuse).

As nouns the difference between ecumenisms and goodbye

is that ecumenisms is while goodbye is an utterance of goodbye, the wishing of farewell to someone.

As an interjection goodbye is

; a formula used to another person or persons when the speaker, writer, or person addressed is departing.

As a verb bid

is .

As an interjection goodbye is

; a formula used to another person or persons when the speaker, writer, or person addressed is departing.

As a noun goodbye is

an utterance of goodbye, the wishing of farewell to someone.

As interjections the difference between hallo and goodbye

is that hallo is a variant of hellogoodbye is farewell; a formula used to another person or persons when the speaker, writer, or person addressed is departing.

As nouns the difference between hallo and goodbye

is that hallo is the cry "hallo! while goodbye is an utterance of goodbye, the wishing of farewell to someone.

As a verb hallo

is to shout, or to call with a loud voice.