Definitions:
the regard that something is held to deserve; the importance, worth, or usefulness of something

principles or standards of behaviour; one's judgement of what is important in life

the numerical amount denoted by an algebraic term; a magnitude, quantity, or number

the relative duration of the sound signified by a note.

the meaning of a word or other linguistic unit.

the relative degree of lightness or darkness of a particular colour

estimate the monetary worth of

consider (someone or something) to be important or beneficial; have a high opinion of