Helmetflower and Orchidaceous plant

Helmetflower noun - Any of several orchids of the genus Coryanthes having racemes of a few musky-scented waxy flowers with a helmet-shaped lip process.

Orchidaceous plant and helmetflower are semantically related. In some cases you can use "Orchidaceous plant" instead a noun "Helmetflower".

Orchidaceous plant noun - Any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors.

Helmetflower and orchidaceous plant are semantically related. Sometimes you can replace term "Helmetflower" with "Orchidaceous plant", this terms are similar.