different between detain vs detainment

English

From Old French detenir. Cognate with Italian detenere, Portuguese deter, Romanian de?ine, and Spanish detener.

detain (third-person singular simple present detains, present participle detaining, simple past and past participle detained)

(transitive) To keep someone from proceeding by holding them back or making claims on their attention.
(transitive) To put under custody.
(transitive) To keep back or from; to withhold.
- 1650, Jeremy Taylor, The Rule and Exercises of Holy Living
  Detain not the wages of the hireling.
(transitive) To seize goods for official purposes.

detain +? -ment

detainment (countable and uncountable, plural detainments)

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