(n) acoustic material
acoustic absorbent material
(n) teaching material fees
(n) abrasives
(n) raw materials
(P)
(n) moderator
(n) good material or data
(n) packing material (boxes, insulation, shock resistance, etc.)
(n) lumber dealer
(n) lumber dealer
(n) cost of materials
(n) bearish factor
(n) data collecting party
(n) fabric softener
fabric conditioner
(n) synthetic building material
(n) new material
exotic material
(n) advanced materials
new high-tech materials
(n) lumbering (sawing) industry
(n) sawmill
lumbermill
(n) stone dealer
(n) stonemason
(n) heat insulating material
(n) tropical wood
(n) heat insulating material
lagging material
(n) solid wood (as opposed to veneer)
natural wood
(n) compressed wood
(n) medical supplies
(n) sensitive material
(n) hard lumber
(n) cause (grounds) for concern (anxiety)
reason for uneasiness
(n) mechanics of materials
material mechanics