The difference between Insertion and Origin

Insertion as a noun:

The act of inserting, or something inserted.

Insertion as a noun (anatomy):

The distal end of attachment of a muscle to a bone that will be moved by the muscle.

Insertion as a noun (genetics):

The addition of a nucleotide to a chromosome by mutation.

Origin as a noun:

The beginning of something.

Origin as a noun:

The source of a river, information, goods, etc.

Origin as a noun (mathematics):

The point at which the axes of a coordinate system intersect.

Origin as a noun (anatomy):

The proximal end of attachment of a muscle to a bone that will not be moved by the action of that muscle.

Origin as a noun (cartography):

An arbitrary point on Earth's surface, chosen as the zero for a system of coordinates.

Origin as a noun (in the plural):

Ancestry.