turn, tern

Turn or turn means means to move to face right or left, or to revolve--
Make a right turn at the corner.
Turn the car around, this is a one-way street.
To turn something on or off means to flip the switch to power a device or to shut it down--
Turn on the light; it's dark.
To turn something up or down means to increase or decrease volume, speed, or power--
Turn down the radio; it's loud.
Turn up the heat; it's cold.

Tern or tern ( rhymes with turn ) means a sea bird, something like a gull--
You can see the tern feeding its young from here.
A tern landed on the rail of the ship.

Now that you know that, you can say--
"If you turn to your right you will see a tern flying by."

Note--a "turnover" ( one word ) is a kind of pastry--
She made turnovers for dessert,.
"Turnover" ( one word ) also means the frequency of replacing goods or employees--
Employee turnover is too high--maybe we're not paying them enough.
To "turn over" ( two words ) means to roll  yourself , or a person or thing until the top side is down, or to pick something up and put it back with the other side up--
He doesn't know how to turn over a record; being too young to remember LP's.
She forgot to turn over, so she was sunburned on one side.
"Overturn" means to flip over on its back or side--
She was afraid they would overturn the cart.
"Overturn" also means to change an official decision--
The judges were called on to overturn the decision, and declare him the winner.
Note # 2--"in turn" ( two words ) means in order or sequence--
She shook hands with each of them in turn.
Not to be confused with "intern" ( one word ), meaning a learning or practicing employee or staff member, often unpaid--
She is an intern at a local publishing house.
Intern  means a medical student to most people, but there are other interns.
Note # 3--"turn in" most commonly means to deliver assigned work--
Make sure to turn in your papers by Friday.
"Turn in" is also an informal phrase meaning go to sleep--
Well, I think we'll turn in for the night.
Not to be confused with "turning", meaning revolving or moving to face right or left--
He was turning at the corner when he hit the tree.
"Turn into" usually involves magic--
She kissed a toad, hoping he would turn into a prince.
Not to be confused with "turn into", meaning to enter by moving to face right or left--
Go down the street and turn into the lot.
Note # 4--"terne" ( rhymes with turn ) is an alloy of lead and tin--
This will be plated with terne, so it will be more resistant to rust.