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Underlayment vs Underpayment - What's the difference?

underlayment | underpayment |

As nouns the difference between underlayment and underpayment

is that underlayment is something that is underlaid, such as planking in a room of a house; underlay while underpayment is an insufficient payment.

underlayment

English

Noun

(en noun)
  • Something that is underlaid, such as planking in a room of a house; underlay.

    • underpayment

    English

    Noun

    (en noun)
  • An insufficient payment
  • The act of making such a payment
  • The amount by which a payment is insufficient