Is Hong Kong dialect the same as Cantonese? Are Hong Kong dialect and Cantonese both Cantonese?

Hong Kong dialect is standard Cantonese. Cantonese refers to the local dialect based on Guangzhou dialect, which also belongs to Cantonese, but it is not very standard.

Introduction to Cantonese:

Cantonese is also called Cantonese, Cantonese, Guangfu dialect, Cantonese dialect and vernacular, while English is called Canton (or Yue), which is mainly used in most areas of Guangdong Province, southeastern Guangxi Province, Hong Kong, Macao and some overseas Chinese communities.

Pronunciation of both:

Cantonese, usually based on Guangzhou dialect, has a stiff pronunciation and cadence.

Cantonese spoken by Hong Kong people is softer and less fluctuating.