अवमृदा angolul

subsoil [subsoils]▼noun
[UK: ˈsʌbsɔɪl] [US: ˈsʌb.ˈsɔɪl]

undersoil▼noun
[UK: ˈʌn.də.sɔɪl] [US: ˈʌn.də.sɔɪl]