elevenpence

As a noun elevenpence

is (uk|obsolete) the value of eleven old pennies.

As an adjective elevenpenny is

having a value or cost of elevenpence.

As nouns the difference between eleven and elevenpence

is that eleven is (cricket) a cricket team of eleven players while elevenpence is (uk|obsolete) the value of eleven old pennies.

As a numeral eleven

is the cardinal number occurring after ten and before twelve represented as in arabic digits.