Here are some of the key differences between Tongan and Samoan:
* Vocabulary: There are many words that are unique to each language. For example, the word for "hello" in Tongan is "malo e lelei," while in Samoan it is "talofa."
* Grammar: The grammars of Tongan and Samoan are also different. For example, Tongan uses a system of possessive pronouns that are attached to the end of nouns, while Samoan uses a system of independent possessive pronouns.
* Pronunciation: The pronunciations of Tongan and Samoan are also different. For example, the letter "t" is pronounced as a "k" in Tongan, while in Samoan it is pronounced as a "t."
Overall, Tongan and Samoan are two distinct languages with their own unique features.