As adjectives the difference between alive and keen

is that alive is having life, in opposition to dead; living; being in a state in which the organs perform their functions; as, an animal or a plant which is alive while keen is showing a quick and ardent willingness or responsiveness, enthusiastic, eager; interested, intense.

As a verb keen is

(rare) to sharpen; to make cold or keen can be to utter a keen.

As a noun keen is

a prolonged wail for a deceased person.

As nouns the difference between provisions and regulation

is that provisions is while regulation is regulation.

As a verb provisions

is (provision).

As adjectives the difference between decline and teas

is that decline is declined while teas is tea- (in compounds), with tea, of or pertaining to tea.

As a verb decline

is .

As adjectives the difference between extraterrestrial and interdimensional

is that extraterrestrial is originating from outside of the Earth's atmosphere, from space, or from another planet; alien to Earth or its environment while interdimensional is between dimensions.

As a noun extraterrestrial

is a being originating from outside of the Earth's atmosphere, from space, or from another planet; an alien.

As nouns the difference between firework and crackers

is that firework is a device using gunpowder and other chemicals which, when lit, emits a combination of coloured flames, sparks, whistles or bangs, and sometimes made to rocket high into the sky before exploding, used for entertainment or celebration while crackers is plural of lang=en.

As an adjective crackers is

crazy, insane.

As a verb crackers is

third-person singular of cracker.

As verbs the difference between snot and slime

is that snot is (snyta) while slime is to coat with slime.

As a noun slime is

soft, moist earth or clay, having an adhesive quality; viscous mud; any substance of a dirty nature, that is moist, soft, and adhesive; bitumen; mud containing metallic ore, obtained in the preparatory dressing.

As nouns the difference between fireworks and crackers

is that fireworks is plural and collective of firework while crackers is plural of lang=en.

As an adjective crackers is

crazy, insane.

As a verb crackers is

third-person singular of cracker.

As nouns the difference between delicacy and dishes

is that delicacy is the quality of being delicate while dishes is plural of lang=en.

As a verb dishes is

third-person singular of dish.

As proper nouns the difference between nathan and christopher

is that nathan is an old testament prophet while christopher is .

As nouns the difference between homojunction and heterojunction

is that homojunction is (physics) a junction between two similar semiconductors while heterojunction is (label) any junction between two different semiconductors; functions as a diode.