appreciation

nouns

understanding of the nature or meaning or quality or magnitude of something
"he has a good grasp of accounting practices"
delicate discrimination (especially of aesthetic values)
"arrogance and lack of taste contributed to his rapid success"; "to ask at that particular time was the ultimate in bad taste"
an expression of gratitude
"he expressed his appreciation in a short note"
is a type of (narrower)
an acknowledgment of appreciation
a favorable judgment
"a small token in admiration of your works"
an increase in price or value
"an appreciation of 30% in the value of real estate"
antonym
is a type of (narrower)
the act of increasing something
"he gave me an increase in salary"