Structure (countable and uncountable)

Why is BONE STRUCTURE uncountable (only) POWEr STRUCTURE is countable (only)???

This is not like "behavior" which dictionary says can be both countable and uncountable.

For these two words its either or...

How come??

Anyone please?

This puzzle is driving me crazy....

englishnewbieMcmilian dictionary says BONE STRUCTURE is uncountable.

I'm inclined to disagree with the notion that "bone structure" can only be uncountable.

In examining the fossils, we found a variety of bone structures.
(That is, in one specimen the bone sample was structured differently than in another.)

This doesn't refer to th

You have deepened the puzzel...

I quote this from McMillian dictionary:

bone structure
noun [uncountable]

This definition is also common.

If Jane has fine/good bone structure and Jill has coarse/poor bone structure, we may say that their bone structures (plural) are different. (Yes, here it refers to the shapes of the bones.)

You may also say that their bone structure (singular) is different.

Jane has bone structure A and Jill has bone structure B.

781,000 G

HI,
Thanks for your replay.

Are you saying that it's ok to say

Jane has a fine bone structure or
They have find bone structures?

THat is, the dictionary is wrong?

Many dictionaries do not include information about countability because it is so variable. Almost all nouns can be used in one situation or another as countable and in some other situation as uncountable. Any dictionary that gives information about countability is probably only listing the most common usage, not all usages. In my opinion you can safely ignore at least 90% of those "countable /

englishnewbieAre you saying that it's ok to say

Jane has a fine bone structure or

They have find bone structures?

Yes.

Thank you both!

englishnewbieThey have find bone structures?

Woops! Typo!