As an adjective dapper

is neat, trim.

As a noun dabber is

a thing or person that dabs.

As a verb recognise

is to match something or someone which one currently perceives to a memory of some previous encounter with the same entity.

As a numeral kow is

one.

R is likely misspelled.

R has no English definition.

As an interjection ick

is an exclamation of disgust.

As a noun ick

is (informal) Something distasteful.

As nouns the difference between history and myth

is that history is the aggregate of past events while myth is a traditional story which embodies a belief regarding some fact or phenomenon of experience, and in which often the forces of nature and of the soul are personified; a sacred narrative regarding a god, a hero, the origin of the world or of a people, etc.

As a verb history

is to narrate or record.

As an adjective nascent is

emerging; just coming into existence.

As verbs the difference between hinting and referring

is that hinting is while referring is .

As a noun hinting

is the act of giving a hint or suggestion.

In chemistry terms the difference between monocyclic and acyclic

is that monocyclic is any monocyclic compound while acyclic is not cyclic; having an open chain structure.

As a noun monocyclic

is any monocyclic compound.

As verbs the difference between sentence and execute

is that sentence is to declare a sentence on a convicted person; to doom; to condemn to punishment while execute is .

As a noun sentence

is (obsolete) sense; meaning; significance.

As conjunctions the difference between until and when

is that until is up to the time that (a condition becomes true) while when is at what time.

As a preposition until

is up to the time of (something happening).

As an adverb when is

Used to introduce questions about time.

As a pronoun when is

what time; which time.

As a noun when is

the time.

As an interjection when is

that's enough, a command to stop adding something, especially an ingredient of food or drink.