Graminaceous plant and Herbaceous plant

Graminaceous plant noun - Cosmopolitan herbaceous or woody plants with hollow jointed stems and long narrow leaves.

Herbaceous plant and graminaceous plant are semantically related. In some cases you can use "Herbaceous plant" instead a noun phrase "Graminaceous plant".

Herbaceous plant noun - A plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests.

Graminaceous plant and herbaceous plant are semantically related. Sometimes you can replace phrase "Graminaceous plant" with "Herbaceous plant", this phrases are similar.