質 - substance, quality, matter

nervous; highly strung; sensitive

essence; true nature; substance; reality

good quality; fine quality; superior quality; high quality

material

quality (of a product or a service)

material; substance

frequently asked questions; FAQ

homogeneous; homogeneity

malicious; vicious; malignant; underhanded

antibiotic

sugariness; saccharinity; carbohydrate

essential; substantial; substantive; intrinsic