plurals using an apostrophe or not for these certain words

[uncletom]

Hello.

I have been confused about how to use the following words written in a plural sense.

Ok this is pertaining to a type of crab that is eaten in restaurants. These actual words are pertaining to sizes.

Hotel crab Hotel is the size for ordering. How do you turn it into a plural

Hotel's crab or Hotels crab

So the sizes go;

Medium
Hotel
Jumbo
Prime
Whale and then the type of crab that is.

But we use the size determinating word too without ever mentioning the
crab.. Say we say Hotel in the plural sense ,but never mention the crab.

The sizes are and adjective, but also a possesive noun. Correct?

How should I address the writing part? I really need to know.

My guess is that it is apostrope s.. 's for a possevive thing

Thanks

Uncletom

[Mister Micawber]

.
Your post is inordinately confusing, but I shall essay it:

These are the sizes-- Medium, Hotel, Jumbo, Prime, Whale?
And they are matched with a kind of crab-- Softshell, King, Blue?

Then I might order one Medium Softshell Crab or one Hotel Blue Crab.
Or I might order two Medium Softshell Crabs or two Hotel Blue Crabs.

For short, I would order one Hotel Blue or two Hotel Blues.
Shorter: one Hotel or two Hotels.

There is no possession involved, and therefore no apostrophes.