Amnesia vs. Insomnia

(pathology) Loss of memory; forgetfulness.

(figurative) Forgetfulness.

Example: ‘a state of cultural amnesia’;

Forgetfulness; also, a defect of speech, from cerebral disease, in which the patient substitutes wrong words or names in the place of those he wishes to employ.

partial or total loss of memory;

Example: ‘he has a total blackout for events of the evening’;

Amnesia is a deficit in memory caused by brain damage or disease, but it can also be caused temporarily by the use of various sedatives and hypnotic drugs. The memory can be either wholly or partially lost due to the extent of damage that was caused.

A sleeping disorder that is known for its symptoms of unrest and the inability to sleep.

Lack of sleep; inability to sleep, especially when chronic; wakefulness; sleeplessness.

an inability to sleep; chronic sleeplessness

Insomnia, also known as sleeplessness, is a sleep disorder in which people have trouble sleeping. They may have difficulty falling asleep, or staying asleep as long as desired.