Continual vs Continuous
Continualadjective
occurring without interruption; chiefly restricted to what recurs regularly or frequently in a prolonged and closely spaced series
Continuousadjective
continuing in time or space without interruption
The difference
Continual means repeated with breaks. Continuous means unbroken. Continual interruptions; a continuous line.
How to keep them apart
Continuous is uninterrupted — the u runs straight through.