There are also mixed languages, which blend two languages together… I suppose that if you know one or both of the source languages, it’s easier.
Michif derives nouns, numerals, definite/indefinite articles, possessive pronouns, some adverbs and adjectives from French, while it derives demonstratives (in/animate), question words, verbs (in/animacy agreement with the subject/object), and some adverbs/verb-like adjectives from Cree.[8] The Cree components of Michif generally remain grammatically intact, while the French lexicon and grammar is restricted to noun phrases where nouns occur with a French possessive element or article (i.e. in/definite, masculine/feminine, singular/plural).[9][10]