It looks like you're comparing the vowel sounds in "cheek" and "hay." Both words contain the /iː/ sound (as in "cheek") and represent a long vowel sound. The pronunciation is as follows:

- "Cheek" is pronounced /chiːk/, where the vowel sound is a long "ee" sound.
- "Hay" is pronounced /heɪ/, where the vowel sound is a diphthong that starts with the /e/ and glides to /ɪ/.

If you need more clarity or a comparison between the two sounds, please let me know!