Does ough have the same vowel sound as grouch?

Only for some Words. The OU in grouch has the OW sound as in couch and pouch.

The letters OUGH can have 4 different sounds:

In dough, it is the long O (oh) as in though and thorough.

In cough, it is the AW sound as in trough.

In rough, it is the short U sound as in tough and slough.

Only in bough (bow) and plough (plow) does it have the same OW sound as grouch.