As a noun hydrokinetics

is (physics) the branch of physics concerned with the movement of fluids.

As an adjective hydrokinetic is

of or pertaining to hydrokinetics.

As a noun fluid

is fluid.

As an adjective hydrokinetic is

of or pertaining to hydrokinetics.

As nouns the difference between physics and hydrokinetics

is that physics is the branch of science concerned with the study of properties and interactions of space, time, matter and energy or physics can be while hydrokinetics is (physics) the branch of physics concerned with the movement of fluids.

As a verb physics

is (physic).

As a noun nest

is a structure built by a bird as a place to incubate eggs and rear young.

As a verb nest

is to build or settle into a nest.

As an adjective nidifugous is

that leaves the nest shortly after hatching.

As a proper noun hatch

is .

As an adjective nidifugous is

(biology|of a bird) that leaves the nest shortly after hatching.

Nidifugous is a related term of nidicolous.

As adjectives the difference between nidicolous and nidifugous

is that nidicolous is tending to stay at the nest or birthplace for a long time after birth, due to dependence on the parents for feeding and protection while nidifugous is that leaves the nest shortly after hatching.

As a noun neurotropism

is (biology) an affinity for nervous tissue.

As an adjective neurotropic is

of or pertaining to neurotropism.

As adjectives the difference between neurotrophic and neurotropic

is that neurotrophic is of, or relating to neurotrophy while neurotropic is of or pertaining to neurotropism.

As nouns the difference between affinity and neurotropism

is that affinity is a natural attraction or feeling of kinship to a person or thing while neurotropism is (biology) an affinity for nervous tissue.

As an adjective nervous

is (obscure) of a piece of writing: forceful, powerful.

As a noun neurotropism is

(biology) an affinity for nervous tissue.