It could be, if the container were made of glass.Can I ask why it wouldn't be referred to as a jar?
We Brits have no concept of plastic jars. To us, jars are made of glass. That's a tub of Vaseline.

Right. Thanks. What would you call the item in post#8?The weight makes no difference to me. It's still a tub or a pot, depending on your preference.
What would you call something like this then? I'm not sure if I've ever seen peanut butter in glass. (Note the proper choice of crunchy (aka chunky) vs. smooth.)
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