English:
* Grave: meaning serious, important, or solemn.
* Gravity: the force of attraction between objects with mass.
* Gravitas: a dignified, serious, and impressive manner.
* Aggravate: to make worse.
* Grave: a place for burying the dead.
Medical:
* Gravid: pregnant.
* Gravida: a pregnant woman.
* Gravidity: the state of being pregnant.
Other:
* Gravitate: to be drawn to something.
* Gravimetric: relating to the measurement of weight.
* Gravimetry: the technique of measuring weight.
It's important to note that some of these words have slightly different meanings depending on the context.