The difference between Decimation and Tithing

Decimation as a noun (strictly):

The killing or punishment of every tenth person, usually by lot.

Decimation as a noun (generally):

The killing or destruction of any large portion of a population.

Decimation as a noun:

A tithe or the act of tithing.

Decimation as a noun (mathematics):

The creation of a new sequence comprising only every nth element of a source sequence.

Decimation as a noun (telecommunications):

A digital signal-processing technique for reducing the number of samples in a discrete-time signal.

Tithing as a noun (particularly):

A tithe or tenth in its various senses, : The tithe given as an offering to the church. The payment of tithes. The collection of tithes.

Tithing as a noun (dialectal):

Ten sheaves of wheat (originally set up as such for the tithe-proctor).

Tithing as a noun (historical, law):

A body of households (originally a tenth of a hundred or ten households) bound by frankpledge to collective responsibility and punishment for each other's behavior.

Tithing as a noun (historical, law):

A part of the hundred as a rural division of territory.

Tithing as a noun (obsolete):

Decimation: the killing of every tenth person or the killing of every person except each tenth.

Tithing as a verb:

Tithing as a noun (obsolete):

A reward, grant, or concession.