As nouns the difference between autoreceptor and heteroreceptors

is that autoreceptor is a receptor, situated in the terminal of a presynaptic nerve cell, that is sensitive to neurotransmitters released by the neuron in whose membrane the autoreceptor sits while heteroreceptors is .

In transitive terms the difference between conceal and cancel

is that conceal is to hide something from view or from public knowledge, to try to keep something secret while cancel is to offset or equalize something.

As a noun cancel is

a cancellation (US); (nonstandard in some kinds of English).

In transitive terms the difference between conceal and seal

is that conceal is to hide something from view or from public knowledge, to try to keep something secret while seal is to guarantee.

As a noun seal is

a pinniped (Pinnipedia), particularly an earless seal (true seal) or eared seal.

Ceal is likely misspelled.

Ceal has no English definition.

As a noun seal is

a pinniped (Pinnipedia), particularly an earless seal (true seal) or eared seal.

As a verb seal is

to hunt seals.

In obsolete|lang=en terms the difference between strive and attain

is that strive is (obsolete) strife; contention while attain is (obsolete) to overtake.

As verbs the difference between strive and attain

is that strive is to try to achieve a result; to make strenuous effort; to try earnestly and persistently while attain is to accomplish; to achieve.

As a noun strive

is (obsolete) an effort; a striving.

As a noun wish is

a desire, hope, or longing for something or for something to happen.

As a verb wish is

(label) to desire; to want.

As a verb contain

is (lb) to hold inside.

As a noun on is

lamb.

As a verb inundate

is to cover with large amounts of water; to flood.

As a noun date is

.

As adjectives the difference between opponent and oppositive

is that opponent is situated in front; opposite; hence, opposing; adverse; antagonistic while oppositive is expressing contrariety.

As a noun opponent

is an individual or group who is a rival of another.

As a noun envelope

is a paper or cardboard wrapper used to enclose small, flat items, especially letters, for mailing.

As a verb envelope

is (nonstandard).

As a proper noun lope is

.