Minimal Pairs /f/ and /h/
Below is a list of words that vary only by one having the sound /h/ and the other having the sound /f/.
You can use this list to practise the sounds, or as a list of words to be careful in pronouncing.
/f/ is pronounced with a much smaller mouth than /h/, with the teeth near or touching the bottom lip. This means that, unlike "ha", you have to open your mouth wider to say the second part of the word "far". Using the same mouth position as /f/, your voice produces the sound /v/.