As an adjective classical

is of or relating to the first class or rank, especially in literature or art.

As a noun popera is

(informal|music|uncountable) a crossover genre combining elements of pop music and classical opera.

As a noun popera is

(informal|music|uncountable) a crossover genre combining elements of pop music and classical opera.

As a noun organ

is organ.

As a verb denervate is

(medicine|surgery) to deprive an organ of a nerve supply.

As verbs the difference between nerve and denervate

is that nerve is while denervate is (medicine|surgery) to deprive an organ of a nerve supply.

Denervation is a related term of denervate.

As a noun denervation

is (medicine) the removal or blocking of a nerve connection to tissue, such as by surgical or chemical means.

As a verb denervate is

(medicine|surgery) to deprive an organ of a nerve supply.

As nouns the difference between division and disaggregation

is that division is the act or process of dividing anything while disaggregation is a division or breaking up into constituent parts, particularly the analytic disassembly of categories which have been aggregated or lumped together.

As nouns the difference between constituent and disaggregation

is that constituent is a part, or component of a whole while disaggregation is a division or breaking up into constituent parts, particularly the analytic disassembly of categories which have been aggregated or lumped together.

As an adjective constituent

is being a part, or component of a whole.

As nouns the difference between retaliation and countermovement

is that retaliation is violent response to an act of harm or perceived injustice while countermovement is a movement in opposition, or retaliation to another.

As nouns the difference between amelanchier and shadbush

is that amelanchier is serviceberry (plant) while shadbush is any plant in genus amelanchier .

As an adverb less

is to smaller extent.

As an adjective less

is .

As a preposition less

is minus; not including.

As a verb less

is (obsolete) to make less; to lessen.

As a conjunction less

is (obsolete) unless.

As a noun lessness is

(philosophy) the state or condition of being less.