Latin word pinaster comes from Latin pinus, Latin -astrum

Detailed word origin of pinaster

Dictionary entry	Language	Definition
pinus	Latin (lat)	Lance, spear. Pine forest, pineland. Pine tree. Pinewood, or a thing made of such wood. Wreath of pine leaves.
-astrum	Latin (lat)	Suffix of nouns, expressing incomplete resemblance, hence generally pejorative.
pinaster	Latin (lat)	Wild pine.

Words with the same origin as pinaster