Suffocation (noun)

1. The act of preventing or being prevented from breathing freely.
2. The condition of not getting enough air or oxygen, leading to unconsciousness or death.

Origin:

Derived from the latin word 'suffocare' (to smother), which is a combination of 'sub' (under) and 'focare' (to stifle).

Examples:

1. The cause of death was suffocation due to the pillow being pressed over his face.
2. The baby was taken to the hospital with symptoms of suffocation caused by a blocked airway.
3. The dangerous gas leaked from the pipe, causing suffocation to people nearby.
4. The tight-fitting clothing caused her suffocation and discomfort.
5. The room was filled with smoke, making it difficult for him to breathe and causing suffocation.