I can only come up with three-ish words for sea-ice. Although I do have many more concepts in my mind
Ice, iceberg, floating ice..
The fascinating this is when I learned that what you can communicate influences how you see and experience the world. Language has always fascinated me in that way
I do know more _concepts_ for sea ice though!
Meters-thick ice plateaus safe to live on for years (where ice bears live and hunt and so on)
Watery slushy ice you can easily sail navigate through with a boat.
50-200cm thick ice you can't go through with a small boat, thick enough to walk on.
Small ice platforms floating on the water, technically thick enough to stand on but what's the point since it's maybe 2 meters in diameter?
There're probably many more types of ice worth having a concept and eventually even a word for. If hunting is important for you, and there's a specific formation/type of ice where sea-lions typically gather, it's great to have a word for that!
A lot of a people's culture and a lot of individual's personal experience is embedded in the language they speak.
You save no time by having shortened words for things that you could describe easily enough, if you aren't having to do so on a regular basis.
As an easy, for me, example. Consider the manipulation of cards. For most folks, you can flip a card. Rotate a card. Put a card on a table. Put a card in a stack on a table. Put it in a pile on a table. Etc., If you are a gamer, you draw a card, discard, tap, activate, hide, trash, remove, etc.. All have distinct differences that are only signified because they happen so often in a game that it wouldn't make sense not to compress them down.
Moving back to ice, I would hazard that there is probably not that many words for "sea-ice" in situations that are not encountered. Would love to know if I am wrong. (e.g., Asteroids made of salt water. Planets of frozen water? I could actually see either of those being in lore, but not sure.)
A wrench is a wrench when you just need a wrench. But a wrench is a combination wrench when you need a cone wrench.
Or perhaps it's this act of compression that creates an embedding of the culture in the language?
And even centuries later, when the compression isn't relevant anymore, there will still be remnants of the culture embedded in the language.
"Well, we had a crick," I said. "It wasn't much fun being poor if you didn't have a crick around someplace."
"You mean a creek?"
"No, I mean a crick. A creek is what rich people had. Poor people had cricks."
waste-water, drinking-water, fresh-water, salt-water, dirt-water, ice-water, water-ice, spring-water, ...
dry, damp, foggy, misty, drizzle, sprinkles, showers, rain, downpour, deluge, torrent.