worth -
the quality that renders something desirable or valuable or useful
ineptitude,
worthlessness having no qualities that would render it valuable or useful; "the drill sergeant's intent was to convince all the recruits of their worthlessness"
quality an essential and distinguishing attribute of something or someone; "the quality of mercy is not strained"--Shakespeare
value relative darkness or lightness of a color; "I establish the colors and principal values by organizing the painting into three values--dark, medium...and light"-Joe Hing Lowe
merit,
virtue any admirable quality or attribute; "work of great merit"
demerit,
fault the quality of being inadequate or falling short of perfection; "they discussed the merits and demerits of her novel"; "he knew his own faults much better than she did"
