Word:

  natural fiber

1. natural fiber (n)
  fiber derived from plants or animals.

natural fiber is an instance of
fiber,  fibre

Word and things that fall within natural fiber
pandanus,  New Zealand cotton,  bowstring hemp,  bast,  bast fiber,  animal fiber,  animal fibre,  plant fiber,  plant fibre,  staple,  staple fiber,  staple fibre