avid

As adjectives the difference between acid and avid

is that acid is acid; sour; tart (having a sharp taste such as that of vinegar or a lemon) while avid is enthusiastic; passionate; longing eagerly; eager; greedy.

As a noun acid

is acid (a food with a sharp taste).

As adjectives the difference between fond and avid

is that fond is (chiefly|with of) having a liking or affection (for) while avid is enthusiastic; passionate; longing eagerly; eager; greedy.

As a noun fond

is the background design in lace-making.

As a verb fond

is (obsolete) to have a foolish affection for, to be fond of.

As an adjective avid is

enthusiastic; passionate; longing eagerly; eager; greedy.

As adjectives the difference between avid and sick

is that avid is enthusiastic; passionate; longing eagerly; eager; greedy while sick is in poor health.

As a noun sick is

sick people in general as a group.

As a verb sick is

to vomit or sick can be (rare).

As an adjective avid

is enthusiastic; passionate; longing eagerly; eager; greedy.

As a verb desired is

(desire).

As adjectives the difference between avid and anxious

is that avid is enthusiastic; passionate; longing eagerly; eager; greedy while anxious is full of anxiety or disquietude; greatly concerned or solicitous, especially respecting something future or unknown; being in painful suspense;—applied to persons; as, anxious for the issue of a battle.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective avid is

enthusiastic; passionate; longing eagerly; eager; greedy.

As a noun enthusiasm

is possession by a god; divine inspiration or frenzy.

As an adjective avid is

enthusiastic; passionate; longing eagerly; eager; greedy.

As adjectives the difference between keen and avid

is that keen is showing a quick and ardent willingness or responsiveness, enthusiastic, eager; interested, intense while avid is enthusiastic; passionate; longing eagerly; eager; greedy.

As a verb keen

is to sharpen; to make cold.

As a noun keen

is a prolonged wail for a deceased person.

As adjectives the difference between intense and avid

is that intense is strained; tightly drawn while avid is enthusiastic; passionate; longing eagerly; eager; greedy.