don't know the answer
No.
A sport that starts with Y is Yachting? soz if that didn't help :-)
y intercept and z intercept
zany
There are words that end with z and begin with most letters. However, there are no words in the English language that begin with y and end with z.
cat
How about yo-yo whiz.
· Yellowhammer · Zone-tailed Hawk
Yodelling
There is a candy called zots and for the y I don't know one that starts with that letter.
zinnia
Y could be Yam, a region from Nubia that made and alliance with Egypt. Z could be Zoser, a pharoah.