The difference between Crappy and Poopy

When used as adjectives, crappy means of very poor quality, whereas poopy means depressed, weak, or worthless.

Poopy is also noun with the meaning: excrement.

check bellow for the other definitions of Crappy and Poopy

Crappy as an adjective (chiefly, North America, colloquial, mildly, vulgar):

Of very poor quality; unpleasant; distasteful.

Examples:

"That is such a crappy car."

"The referee just made a really crappy call."

"The food there used to be good but now it's crappy."
Crappy as an adjective (chiefly, North America, colloquial, mildly, vulgar, especially with "feel"):

Bad, sick, or depressed.

Examples:

"I'm feeling really crappy - I think I need some fresh air."
Crappy as an adjective (chiefly, North America, colloquial, mildly, vulgar):

Covered in crap (faeces/feces).

Examples:

"Put the crappy diapers in the blue pail and the wet ones in the yellow pail."