Connection

The term connection has various uses, including:

An act of connecting two or more physical entities in a physical sense or connecting concepts in memory or imagination, see below
- Telecommunications circuit switching
That which connects, relates or joins:
- An electrical connection
- A telecommunication circuit such as a fiber-optic connection
- LAN, PAN, MAN, WAN and other types of synchronous or asynchronous connectionss between computers using OSI or other protocols
- The property of a device enabling it to be connected may be referred to as its connectivity.
- The connection between interacting people
- The connection between dance partners
That to which an entity is connected, such as
- A business or political connection
- A means of transport used for a second or subsequent part of a journey
- A supplier of illegal drugs
In mathematics
- A topological property of certain mathematical objects, better called connectedness: see connected
- A fundamental structure in differential geometry allowing the use of parallel transport on manifolds: see connection (mathematics)
The Connexxion public transport company of the Netherlands
In music and musical form, procedures of connection include gradation, amalgamation, and dissolution. Procedures of contrast include stratification, juxtaposition, and interpolation.

Methods of connecting/fastening include:

anchor (combination of hooking and gravity)
adhesion, adhesive
buckle
button
carabiner
chain
clasping
electrostatic force
glue
gravity (instead of calling this a way of fastening one can also say: there is no need to fasten, it will stay in place due to its weight)
hook, e.g. with eye
magnet
nail
rope, cable, lace (including shoelace), etc. with e.g. a knot
screw, nut and bolt
sewing
stapling
Velcro
welding
zip