What words have the same vowel sound as heard?

Here are some words that have the same vowel sound as "heard":

Short "er" sound:

* Bird

* Stir

* Girl

* Shirt

* World

* Cursed

* Hurt

* Turn

* Burn

* Stern

* Germ

* Churn

* First

* Thirty

Important Note: The vowel sound in "heard" is a bit tricky because it's a diphthong, which means it involves a blend of two vowel sounds. The sound starts like a short "e" and ends with a short "r" sound.