sentences: wood boards are made of wood
docs: wood_paneling is woodwork. stake_made_of_wood is woodwork. artifact_made_of_wood is woodwork. wood has cellulose board is flat_piece_of_wood. other_boards_made_of_wood is ironing_boards_and_surf_boards. woodwork is artifact_made_of_wood. board is piece_of_wood. board is lumber.