hard

As an adjective supple

is pliant, flexible, easy to bend.

As a verb supple

is to make or become supple.

As a noun hard is

stove, heater; an enclosed space in which fuel (usually wood) is burned to provide heating, usually for cooking.

As an adjective prickly

is covered with sharp points.

As a noun hard is

stove, heater; an enclosed space in which fuel (usually wood) is burned to provide heating, usually for cooking.

As nouns the difference between hard and hectic

is that hard is stove, heater; an enclosed space in which fuel (usually wood) is burned to provide heating, usually for cooking while hectic is (obsolete) a hectic fever.

As an adjective hectic is

pertaining to bodily reactions characterised by flushed or dry skin.

As a noun hard

is stove, heater; an enclosed space in which fuel (usually wood) is burned to provide heating, usually for cooking.

As an adjective hardest is

(hard) most rigid or most difficult.

As a noun hard

is stove, heater; an enclosed space in which fuel (usually wood) is burned to provide heating, usually for cooking.

As an adjective undefined is

lacking a definition or value.

As an adverb critically

is in a critical manner; with criticism.

As a noun hard is

stove, heater; an enclosed space in which fuel (usually wood) is burned to provide heating, usually for cooking.

As nouns the difference between hard and strike

is that hard is stove, heater; an enclosed space in which fuel (usually wood) is burned to provide heating, usually for cooking while strike is (baseball) a status resulting from a batter swinging and missing a pitch, or not swinging at a pitch in the strike zone, or hitting a foul ball that is not caught.

As a verb strike is

to delete or cross out; to scratch or eliminate.

As an adjective crucial

is being essential or decisive for determining the outcome or future of something; extremely important.

As a noun hard is

stove, heater; an enclosed space in which fuel (usually wood) is burned to provide heating, usually for cooking.