Horrible vs. Horrific

Horrible and horrific are both related to horror but the words have different connotations. While horrible can be used to refer to something that is not liked or is disagreeable, horrific is a somewhat stronger adjective used to describe things which upset and frighten by their sheer mention.

For example –

"A horrible meal" and "A horrific war".

At times, both "horrible" and "horrific" can also be used to mean more or less the same thing,

e.g. A horrific/horrible illness.