硬

hardness

Esp. 固い and 堅い for wood, 硬い for metal and stone

hard; solid; tough

stiff; tight; wooden; unpolished (e.g. writing)

strong; firm (not viscous or easily moved)

safe; steady; honest; steadfast

obstinate; stubborn

bookish; formal; stuffy

stiffening; rigidity; rigor; stiffness; ossification; petrification

hardness; stiffness

coin

hard currency

hardness; solidity

hardening; vulcanization; vulcanisation; sclerosis; curing

hardening (of attitude, stance, etc.); stiffening; toughening

Finance

upturn (in the market); firming up

hard steel

hard-liners; diehards; hawks

Adjectival nouns or quasi-adjectives (keiyodoshi)

(young) man with traditionally masculine interests; tough boy; man's man

hard news; reporter who covers political and economic affairs

Adjectival nouns or quasi-adjectives (keiyodoshi)

strait-laced type (with respect to relationships)

bullish traders

hardness and softness; hard line and moderate line

hard ball; regulation ball

hard water

hard (esp. of hardball, tennis, etc.)

硬骨 only

bone

Nouns which may take the genitive case particle 'no'; Adjectival nouns or quasi-adjectives (keiyodoshi)

firmness (of character); backbone; unyielding spirit

Anatomy

dura; dura mater

Medicine

subdural hematoma; subdural hemorrhage; subdural haemorrhage

hard glass; hardened glass

hardener; curative agent; stiffening agent

sclerosis

hard rubber (e.g. ebonite, vulcanite)

man of principle; man of firm character; man of steadfast beliefs

regulation baseball (as opposed to the variety played with a rubber ball)

epidural hematoma; epidural haematoma

(regulation-ball) tennis (as opposed to soft tennis)