ardor

As an adjective zealous

is full of zeal; ardent, fervent; exhibiting enthusiasm or strong passion.

As a noun ardor is

great warmth of feeling; fervor; passion.

As nouns the difference between fire and ardor

is that fire is a (usually self-sustaining) chemical reaction involving the bonding of oxygen with carbon or other fuel, with the production of heat and the presence of flame or smouldering while ardor is great warmth of feeling; fervor; passion.

As a verb fire

is to set (something) on fire.

Ardor is a related term of courage.

As nouns the difference between ardor and courage

is that ardor is great warmth of feeling; fervor; passion while courage is courage.

As nouns the difference between forwardness and ardor

is that forwardness is the quality of being forward while ardor is great warmth of feeling; fervor; passion.

As nouns the difference between ardor and warmth

is that ardor is great warmth of feeling; fervor; passion while warmth is a moderate degree of heat; the sensation of being warm.

As nouns the difference between ardor and indifference

is that ardor is great warmth of feeling; fervor; passion while indifference is indifference, uncaringness.

Ardor is a synonym of buoyancy.

As nouns the difference between buoyancy and ardor

is that buoyancy is the upward force on a body immersed or partly immersed in a fluid while ardor is great warmth of feeling; fervor; passion.

As an adjective assiduous

is hard-working, diligent or regular (in attendance or work); industrious.

As a noun ardor is

great warmth of feeling; fervor; passion.

As nouns the difference between attachment and ardor

is that attachment is the act or process of (physically or figuratively) attaching while ardor is great warmth of feeling; fervor; passion.

As a noun ardor

is great warmth of feeling; fervor; passion.

As an adjective amorous is

inclined or having a propensity to love, or to sexual enjoyment.