appreciation

(n) understanding of the nature or meaning or quality or magnitude of something
- he has a good grasp of accounting practices
grasp, hold,
(n) 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
discernment, perceptiveness, taste,
(n) an expression of gratitude
- he expressed his appreciation in a short note
(n) a favorable judgment
- a small token in admiration of your works
admiration,
(n) an increase in price or value
- an appreciation of 30% in the value of real estate

grasp hold discernment perceptiveness taste admiration

depreciation

appreciative