Covering and Theca

Covering noun - Something that covers or conceals like a piece of cloth.

Theca and covering are semantically related. In some cases you can replace term "Theca" with "Covering", this nouns are similar.

Nearby Words: cover, covered, coverage, coverlet

Theca noun - A case or sheath especially a pollen sac or moss capsule.

Covering and theca are semantically related. Sometimes you can use "Covering" instead a noun "Theca".