eternity

In uncountable|lang=en terms the difference between secret and eternity

is that secret is (uncountable) something not understood or known while eternity is (uncountable) existence without end, infinite time.

As nouns the difference between secret and eternity

is that secret is (countable|uncountable) knowledge that is hidden and intended to be kept hidden while eternity is (uncountable) existence without end, infinite time.

As an adjective secret

is being or kept hidden.

As a verb secret

is to make or keep secret.

As nouns the difference between permanence and eternity

is that permanence is the state of being permanent while eternity is (uncountable) existence without end, infinite time.

As nouns the difference between eternity and get

is that eternity is (uncountable) existence without end, infinite time while get is offspring or get can be (british|regional) a git or get can be (judaism) a jewish writ of divorce.

As a verb get is

(label) to obtain; to acquire.

As nouns the difference between eternity and longevity

is that eternity is (uncountable) existence without end, infinite time while longevity is the quality of being long-lasting, especially of life.

As a noun eternity

is (uncountable) existence without end, infinite time.

As an adverb permanently is

in a permanent manner; lastingly.

As nouns the difference between immutable and eternity

is that immutable is something that cannot be changed while eternity is (uncountable) existence without end, infinite time.

As an adjective immutable

is unable to be changed without exception.

As nouns the difference between mission and eternity

is that mission is mission (all senses) while eternity is (uncountable) existence without end, infinite time.

As a noun eternity

is (uncountable) existence without end, infinite time.

As an adjective false is

(label) one of two states of a boolean variable; logic.

As nouns the difference between eternity and instant

is that eternity is (uncountable) existence without end, infinite time while instant is a very short period of time; a moment.

As an adjective instant is

(dated) impending; imminent.

As an adverb instant is

(poetic) at once; immediately.

As a noun eternity

is (uncountable) existence without end, infinite time.

As a proper noun limbo is

abbreviation of limburger, an inhabitant of limburg, a part of the low countries.