All 4 Uses

appreciate
in
A Raisin in the Sun
(Edited)

Whoopee— (He leaps up and clasps his father around the middle with his legs, and they face each other in mutual appreciation...)
Scene 1.1

appreciation = recognition of the value or importance of; and/or gratitude
GEORGE: It's an eight-thirty curtain. That's just Chicago, though. In New York standard curtain time is eight forty. (He is rather proud of this knowledge)
RUTH: (Properly appreciating it) You get to New York a lot?
Scene 2.1

appreciating = recognizing the value or importance of; and/or being grateful for
BENEATHA: (With appreciation of the two meanings, which escape RUTH and WALTER) Un-huh.
Scene 2.3 *

appreciation = understanding (of a situation)
I'm going to try to get right to the point. I'm sure we'll all appreciate that in the long run.
Scene 2.3 *

appreciate = be grateful for

Definitions:

(1) (appreciate as in: I appreciate your help.)
to recognize the value or importance of

and/or:

to be grateful for
(2) (appreciate as in: I appreciate the complexities)
to understand a situation-often one with important complications
(3) (appreciate as in: We hope our home will appreciate)
to increase in value
(4) (meaning too rare to warrant focus)