The ability to reach and use a thing. Access is granted or withheld by someone, always.

Administrator shortened to its working name — the role that tends a system's doors and settings. In this house admin is stewardship, never dominion.

The one shaped thing that opens a particular lock. What grants entry by fitting, not by force.

A word chosen to stand for a subject so the subject can be found. A handle fitted to knowledge.

A secret held so that knowing it proves who you are. A password protects only while it stays unshared.

A cut fragment as it appears in this library, not an English word. Flagged for the mis-cut band rather than defined.