As a noun organ

is organ.

As an adjective organotypic is

(biology) describing tissue, removed from an organ, that continues to develop as it would in that organ.

As nouns the difference between dinosaur and ornithischian

is that dinosaur is any of the creatures belonging to the clade dinosauria, especially those that existed during the triassic, jurassic and cretaceous periods and are now extinct while ornithischian is any of a group of dinosaurs, of the order ornithischia , that have hips characteristic of birds.

As adjectives the difference between silent and nonsilent

is that silent is free from sound or noise; absolutely still; perfectly quiet while nonsilent is not silent.

As a noun silent

is that which is silent; a time of silence.

As adjectives the difference between threatened and nonthreatened

is that threatened is at risk of becoming endangered in the near future while nonthreatened is not threatened.

As a verb threatened

is past tense of threaten.

As an adjective nontrivial

is not trivial.

As a noun nontriviality is

(uncountable) the condition of being nontrivial.

As a noun nucellus

is (botany) the tissue which surrounds and protects the embryo and lies inside of the integuments.

As an adjective nucellar is

of or pertaining to the nucellus.

As a noun nymph

is the larva of certain insects.

As an adjective nymphoid is

of or pertaining to a nymph.

As adjectives the difference between remethylatable and nonremethylatable

is that remethylatable is (biochemistry) able to be remethylated while nonremethylatable is (chemistry) not remethylatable.

As adjectives the difference between remethylated and remethylatable

is that remethylated is methylated again (following demethylation) while remethylatable is (biochemistry) able to be remethylated.

As adjectives the difference between repressed and nonrepressed

is that repressed is subjected to repression while nonrepressed is not repressed.

As a verb repressed

is (repress) or repressed can be pressed again.