common

[crystalking]

submeriens launch torpedos

 

[Storm Yoshi]

ocean

 

[crystalking]

tides
the beaches have tides

 

[3Dejong]

Sand

 

[Storm Yoshi]

crab

 

[crystalking]

elephant

crabs and elephants are animals

 

[PaperStriker]

submerien

It's called submarine... <.<

BTW big.
Elephants are big. ( )

 

[Master Crash]

Hippos? :P

 

[LuigiDude]

Swamps.

 

[Smiddle]

I don't think that you get it.
"deliver and package: you deliver a package", that's nothing that they have in common. You do not deliver a deliver. At least that's how I think it should be played...

Desert. Both are types of terrain.

 

[Storm Yoshi]

sand

 

[crystalking]

beach

there is sand on the beach

 

[LuigiDude]

Crabs

Crabs live on the beach

 

[Smiddle]

there is sand on the beach

That's not what they have in common.
Try starting the sentence with "Both..."

-----------

Lobster

Both are crustacea

 

[crystalking]

fish
they both live in the sea

 

[Dodoman]

Mammals

Both are a type of animal.

 

[Storm Yoshi]

reptile

both are a type of animals

 

[Smiddle]

Carnivores

Both are a type of animals.

 

[PaperStriker]

Frogs

They're both kinds of animals. <_<

 

[crystalking]

tadpols

tadpols evolve into frogs

 

[Smiddle]

...

Waffles

Both are a noun in plural form.

 

[Dodoman]

Pancakes.

Both are a typical breakfast.

 

[Smiddle]

Paper

Both are thin

 

[Dodoman]

Cardboard

Both are a material that are flat.

 

[Smiddle]

Keyboard

Both end with "-board"