What are the types of adjectives which are almost exclusively used as attributes?

What are the types of adjectives which are almost exclusively used as attributes?

The following is a list of some types of adjectives which are almost exclusively used as attributes: (1) adjectives ending in -er which denote relationships (elder, former, inner, latter, outer, upper, etc.); (2) intensifying adjectives including emphasizers (certain, definite, plain, pure, sheer, etc.), amplifiers (absolute, entire, extreme, perfect, total, etc.), and downtoners (feeble, slight, etc.); (3) adjectives that limit the scope of reference (chief，joint, lone, main, only, principal, sole, very, etc.); (4) “ technical” adjectives (chemical, coastal, earthen, hydro-electric, maritime, nuclear, solar, wooden, woolen, etc.); (5) adjectives related to adverbs which denote locations (downstairs, downtown, indoor, inside, outdoor, outside, upstairs, etc.).