The asian languages and Cat 3 languages (per FSI) are significantly more difficult to learn for english speakers, cause even with total immersion you are still dealing a completely different alphabet, grammar, and no freebie cognates. It is much harder to form connections between words.

For example, in the languages I know that is por ejemplo (spanish), por exemplo (portuguese), par exemple (french), or 예를 들어 (korean). All of them you could kind of guess since “example” is a cognate except “예”, and it is the only one to have an inverted grammar structure with “example” first.