hard vs serious

hard and serious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
hard	No	Yes	No	Yes
serious	No	Yes	No	No

hard (adjective)	serious (adjective)
produced without vibration of the vocal cords	concerned with work or important matters rather than play or trivialities
resisting weight or pressure	completely lacking in playfulness
dispassionate	causing fear or anxiety by threatening great harm
(of speech sounds); produced with the back of the tongue raised toward or touching the velum	requiring effort or concentration; complex and not easy to answer or solve
(of light) transmitted directly from a pointed light source	of great consequence
not easy; requiring great physical or mental effort to accomplish or comprehend or endure	appealing to the mind
being distilled rather than fermented; having a high alcoholic content
unfortunate or hard to bear
given to excessive indulgence of bodily appetites especially for intoxicating liquors
dried out
very strong or vigorous
characterized by effort to the point of exhaustion; especially physical effort

hard (adverb)	serious (adverb)
with effort or force or vigor
to the full extent possible; all the way
slowly and with difficulty
causing great damage or hardship
with firmness
indulging excessively
earnestly or intently
with pain or distress or bitterness
very near or close in space or time
into a solid condition