Indumentum and Natural covering

Indumentum noun - A covering of fine hairs (or sometimes scales) as on a leaf or insect.

Natural covering and indumentum are semantically related. In some cases you can use "Natural covering" instead a noun "Indumentum".

Natural covering noun - A natural object that covers or envelops.

Indumentum and natural covering are semantically related. Sometimes you can replace term "Indumentum" with "Natural covering", this terms are similar.