Deputy Sheriff’s are police officers. Prove me wrong. And, your tutu was meant for someone much smaller.
Look at the words lil feller.
Sheriff = Sheriff.
police officer = police officer.
Here is an easier one for you to help you see the pattern.
cat = cat - correct
ball = ball - correct
cat = ball - incorrect
Get an adult to print this for you and you can take it to school then perhaps your teacher being used to dealing with you short bus kids can better explain it to you.
Personally I have grown bored with you much like the a magician gets tired of showing a chicken a card trick.
Night night wee one.