Tuft
Part of speech: verb
Definition: To provide or decorate with a tuft or tufts. To form into tufts. To secure and strengthen (a mattress, quilt, etc.) with tufts. To be formed into tufts.
Part of speech: noun
Definition: A bunch of feathers, grass or hair, etc., held together at the base. A cluster of threads drawn tightly through upholstery, a mattress or a quilt, etc., to secure and strengthen the padding. A small clump of trees or bushes. A gold tassel on the cap worn by titled undergraduates at English universities. A person entitled to wear such a tassel.
Tussock
Part of speech: noun
Definition: A tuft or clump of green grass or similar verdure, forming a small hillock.