As nouns the difference between kilometer and litre

is that kilometer is standard spelling of from=American spelling|lang=en while litre is the metric unit of fluid measure, equal to one cubic decimetre. Symbols: l, L, ℓ.

As a noun tenderness

is a tendency to express warm, compassionate feelings.

As an adverb gently is

in a gentle manner.

As nouns the difference between glee and fan

is that glee is (uncountable) joy; merriment; mirth; gaiety; particularly, the mirth enjoyed at a feast while fan is .

As verbs the difference between updated and review

is that updated is past tense of update while review is to survey; to look broadly over.

As a noun review is

a second or subsequent reading of a text or artifact.

As nouns the difference between fan and fondness

is that fan is while fondness is the quality of being fond.

As verbs the difference between refers and uses

is that refers is (refer) while uses is .

As adjectives the difference between weak and dense

is that weak is lacking in force (usually strength) or ability while dense is having relatively high density.

As nouns the difference between adult and newborn

is that adult is a fully grown human or animal while newborn is a recently born baby.

As adjectives the difference between adult and newborn

is that adult is fully grown while newborn is recently born.

As a verb adult

is to (cause to) be or become an.

As verbs the difference between swear and promises

is that swear is to take an oath or swear can be to be lazy; rest for a short while during working hours while promises is (promise).

As nouns the difference between swear and promises

is that swear is a swearword while promises is .

As an adjective swear

is heavy.

As nouns the difference between moot and ask

is that moot is size, measure while ask is amplitude shift keying.