As nouns the difference between human and aliens

is that human is a human being, whether man, woman or child while aliens is plural of alien.

As verbs the difference between human and aliens

is that human is to behave as or become, or to cause to behave as or become, a human while aliens is third-person singular of alien.

As an adjective human

is of or belonging to the species Homo sapiens or its closest relatives.

As adjectives the difference between happiest and happier

is that happiest is (happy) while happier is (happy).

As adjectives the difference between able and doable

is that able is easy to use while doable is possible to do; feasible.

As a verb able

is to make ready.

As a noun able

is a word that is used in place of the letter "A" during communication.Wp

As an adjective major

is .

As a noun trend is

trend.

As nouns the difference between highs and lows

is that highs is while lows is .

As a verb lows is

(low).

As verbs the difference between raising and boosting

is that raising is while boosting is .

As a noun raising

is elevation.

As nouns the difference between orthodontist and odontologist

is that orthodontist is an orthodontic dentist while odontologist is one who studies teeth.

As nouns the difference between stem and crazy

is that stem is (countable) while crazy is an insane or eccentric person; a crackpot.

As an adjective crazy is

insane; lunatic; demented.

As an adverb crazy is

(slang) very, extremely.

As an adjective crazy

is insane; lunatic; demented.

As an adverb crazy

is (slang) very, extremely.

As a noun crazy

is an insane or eccentric person; a crackpot.

As a proper noun bird is

.

As nouns the difference between supernova and whelk

is that supernova is supernova while whelk is certain edible sea snails, especially, any one of numerous species of large marine gastropods belonging to , much used as food in europe.