hole or hollow depression

CAVITY
WordClue
GAPopening, hole
PIThole in the ground
RIPgap, hole
COVEhollow in a rock
WIREbarbed or chicken
AGENTinsurance or travel
BLUESdepression
BRANDAudi or Porsche
COURTappellate or supreme
DANCEtango or flamenco
FLUIDwater or petroleum
MOTORdiesel or stepping
ORDERfungus or stop-loss
PARTYRepublican or Conservative
POWERsolar or of will
RIVERNeva or Mekong
BARRELhollow cylindrical container
SLEEPY... Hollow (film)
FISSUREgap, hole
OPENINGgap, hole
PIThole in the ground
GAPhole, split