Mastering Khmer will take from you 1100 hours or 44 weeks in a class according to FSI. Difficulty category for mastering it is evaluated 2 point.
Learning Swahili might seem like a overwhelming thing to do. FSI has concluded that it takes 36 hours or 900 weeks in a class to learn the language. The difficulty point is -.
You will most likely find people, who speaks Khmer in Cambodia, Vietnam, Thailand, Canada, China, France, Laos, USA..
Number of native speakers is about 13,000,000.
Number of fluent speakers is about 15,000,000. The biggest country in which Khmer is used as a native language is Cambodia.
Native speakers of Swahili are mostly from African Great Lakes countries (Kenya, Tanzania, and the DRC) and are about 5,000,000 people.
Swahili are spoken fluently by 140,000,000 people.
The language is spoken in Tanzania, Kenya, Democratic Republic of the Congo, Bajuni Islands, Mozambique (mostly Mwani), Burundi, Rwanda, Uganda,Comoros, Mayotte, Zambia, Malawi, and Madagascar.
Khmer came from Mon-Khmer branch of the Austroasiatic language family.
Bantu language a subgroup of the Benue-Congo branch of the Niger-Congo language family is the origin of Swahili language.