Constant means continuous, repetitive and constant. Related phrases include acidity constant, affinity constant, Boltzmann constant, Boltzmann constant and aberration constant. Sentences can be made like this:

Laughing and interrupting voices kept coming from the meeting place.

There were constant taunts and interruptions in the venue.

Trying to bring them up to standard is a constant struggle.

It takes constant efforts to bring them up to the standard.

Frequent use of wheelchairs will wear almost all floor surfaces.

The floor where wheelchairs often walk will almost be worn out.

Weather is an eternal topic in Britain.

Weather is an eternal topic in Britain.