Medullary Cavity or bone cavity is also a word called fossa.
Mouth
nostril
hole
Niche, recess, cavity, etc.
No. Maybe you want "sinus".
Another word that can be used instead of vacuole is cavity. Both are a small hole, filled with fluid.
Oral Cavity
A 'cavity' is a hole in something.
The oral cavity is another name for the mouth.
This another name for the thoracic cavity. The thoracic cavity contains the heart and lungs.
my cavity was getting worse every day.