Why French fry a compound word?

"French fry" is not a compound word, it's a phrasal noun.

Here's why:

* Compound words are formed by combining two or more words into one, often with a hyphen or space between them (e.g., "high school," "upstairs," "ice cream").

* Phrasal nouns are groups of words that act as a single noun, often made up of an adjective or preposition followed by another noun (e.g., "running shoes," "the ocean blue," "french fries").

While "French fries" sounds like it might be a compound word, it's actually a noun phrase describing a type of fry.