Hardening and Preservation

Hardening noun - The act of making something harder (firmer or tighter or more compact).

Preservation and hardening are semantically related. In some cases you can use "Preservation" instead a noun "Hardening".

Nearby Words: harden, hardened, hardener

Preservation noun - The act or activity of keeping something in an existing and usually satisfactory condition.

Hardening and preservation are semantically related. Sometimes you can use "Hardening" instead a noun "Preservation".

Nearby Words: preserve, preserved, preserver, preserving, preservative