The word could be scarce.
steak
snowflake in Egypt
it's a sloth
I don't know how rare it is but there's Cucumbers.
Tungsten is a rare metal. It is chemical element #74.
titanium
· Bubonic plague
Tungsten.
A flower that starts with s is a sunflower.
A waterfowl that starts with S is swan.
Biplanes are rare now, but were all the rage in the 1920's and 1930's,
words starts with s
a Stool is a furniture that starts with a S