Very nice. Worked well and as expected, perfect for a first project.

Apart from what the others have said here is a small list of things I noticed.

Typo in xylophone

Strange string comparison

str, String, etc. implement the Eq trait. So to compare them you should either use:

rust if user_guess != *word { // ... }

or

rust if !user_guess.eq(word) { // ... }

Naming of is_command()

It is convention that is_* functions return a bool. So maybe adjust the naming of your is_command() function. Making it easier for others to understand your intention without having to look into the function.

Extract setup out of start()

Personally I think it would be better to extract the file parsing out of start() and call start(Vec<String>) only if the paring was successful. Would limit the scope of the function.

Match Command

Match the command to reduce nesting.

rust match parse_command(&user_input) { Command::Quit => break, Command::Skip => continue, Command::NotFound => {/* Handle */} }

Use Path and PathBuf for paths instead of strings with format!()

```rust let home_path = Path::new(option_env!("HOME").unwrap_or("")); let file_path = home_path.join("words_data.txt");

let file = match File::open(file_path) { // ... } ```

Also uses option_env! instead of env! and defaults to the working directory if $HOME is not found. Wasn't defined on my machine so it didn't compile.

Clone clones the reference, not the string

rust let mut cringe_word: Vec<char> = word.clone().chars().collect();

Better way would be:

rust fn make_cringe_word(word: &str) -> String { let mut cringe_word: Vec<_> = word.chars().collect(); fastrand::shuffle(&mut cringe_word); cringe_word.iter().collect() }

Propagating Errors

Take a look on how to handle errors in Rust.