After a certain change is made to each clue below, the new words will share a common property.

ANGLE

GRAIN

RIVER

SWINE

HEARS
RAVEL

BLANDER

HINT:

The common property relates to the body.

Answers:

Changing one letter in each word will turn it into the name of a human body part:

ANKLE/BRAIN/LIVER/SPINE/HEART/NAVEL/BLADDER