As adjectives the difference between incompatible and false

is that incompatible is of two things: that cannot coexist; not congruous because of differences; irreconcilable; disagreeing while false is (label) one of two states of a boolean variable; logic.

As a noun incompatible

is (medicine|chemistry|chiefly|in the plural) an incompatible substance; one of a group of things that cannot be placed or used together because of a change of chemical composition or opposing medicinal qualities.

As a noun idiocracy

is government that is based upon abstract theory or idiocracy can be (humorous) a government ruled by idiots.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As nouns the difference between resident and present

is that resident is resident while present is present tense.

As a verb resident

is .

As an adjective present is

present (that what''/''which is in the place talked about ).