As an adjective interdefinable

is (logic|philosophy) that can be defined in terms of each other.

As a noun interdefinability is

the property of being interdefinable.

As adjectives the difference between mysterious and unmysterious

is that mysterious is of unknown origin while unmysterious is not mysterious.

As an adjective unmysterious

is not mysterious.

As an adverb unmysteriously is

in an unmysterious way.

In philosophy|lang=en terms the difference between realism and antirealist

is that realism is (philosophy) a doctrine that universals are real—they exist and are distinct from the particulars that instantiate them while antirealist is (philosophy) one who rejects realism.

As nouns the difference between realism and antirealist

is that realism is a concern for fact or reality and rejection of the impractical and visionary while antirealist is (philosophy) one who rejects realism.

As an adjective fallacious

is characterized by fallacy; false or mistaken.

As a noun fallaciousness is

the property of being fallacious.

As an adjective illusory

is resulting from an illusion; deceptive, imaginary, unreal.

As an adverb illusorily is

in an illusory fashion.

As adjectives the difference between dissociable and indissociable

is that dissociable is able to be dissociated, divided or separated while indissociable is not dissociable.

Indissociable is a related term of indissociability.

Indissociability is often a misspelling of indissociable.

Indissociability has no English definition.

As an adjective indissociable is

not dissociable.

As a proper noun enterovirus

is .

As a noun poliovirus is

a human enterovirus of the picornaviridae family that causes poliomyelitis.

As nouns the difference between family and poliovirus

is that family is (lb) a group of people who are closely related to one another (by blood or marriage); for example, a set of parents and their children; an immediate family while poliovirus is a human enterovirus of the picornaviridae family that causes poliomyelitis.

As an adjective family

is suitable for children and adults.