(Christian Science) God.

(cellular automata) Conway's Game of Life.

(uncountable) A noun "life" represents the state of organisms preceding their death, characterized by biological processes such as metabolism and reproduction, distinguishing them from inanimate objects, and can also refer to the status possessed by entities with the properties of replication and metabolism.

The animating principle or force that keeps an inorganic thing or concept metaphorically alive (dynamic, relevant, etc) and makes it a "living document", "living constitution", etc.

Lifeforms, generally or collectively.

(countable) A living individual; the fact of a particular individual being alive.

A noun "life" represents existence, particularly a worthwhile existence, a particular aspect of existence, informal social life, and something inherently part of a person's existence such as job, family, or a loved one.

A noun "life" represents a period of existence, the span of time an object operates, a recognizable period of time, a particular phase or period of existence, and a period of time from a significant event until death or retirement.

A noun "life" represents animation, spirit, vivacity, and can also refer to the most lively component or participant.

A biography.

Nature, reality, and the forms that exist in it.

An opportunity for existence, as well as a chance to play in video games, baseball, softball, cricket, and various children's playground games, which can be lost due to mistakes or certain circumstances.

(uncountable, insurance) The life insurance industry.

(countable) A life assured under a life assurance policy (equivalent to the policy itself for a single life contract).

(aviation) To replace components whose operational lifetime has expired.