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 Catalan might seem like a overwhelming thing to do. FSI has concluded that it takes 575-600 hours or 23-24 weeks in a class to learn the language. The difficulty point is 1.
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 Catalan are mostly from Spain and are about 6,900,000 people.
Catalan are spoken fluently by 7,200,000 people.
The language is spoken in Spain, Algeria, Andorra, Argentina, Belgium, Brazil, Chile, Colombia, Cuba, Dominican Republic, France, Germany, Italy, Mexico, Switzerland, United States, Uruguay, and Venezuela.
Khmer came from Mon-Khmer branch of the Austroasiatic language family.
Romance branch of the Indo-European language family is the origin of Catalan language.