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I want to describe a new product which is an improved version of an existing one. The new product has all the features from the existing product, and adds a few new features.

I am looking for a nice way to phrase the above, specifically the verb which is used to say that the new products has all the features from the previous one:

  • Product X keeps all the features from product Y, and adds ...
  • Product X retains all the features from product Y, and adds ...
  • Product X maintains all the features from product Y, and adds ...
  • ... other?
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Product Y can keep or retain its own features, for example after some kind of upgrade, but product X can't keep or retain the features of product Y, because they belong to product Y.

However, if product Y can be considered to be an "upgrade" of product X (e.g. iPhone 6 vs iPhone 5), then retain would be valid.

None of the meanings of maintain are suitable either.

You can keep it simple by just using have:

Product X has all the features of product Y, and adds...

Note that features are properties of something, so you need to use the preposition of rather than from.

  • Thanks for the explanation. Re. this: "product X can't keep or retain the features of product Y, because they belong to product Y" -- does that apply even when product X is a variation of product Y? Think for example iPhone 6 vs iPhone 5. – Grodriguez Mar 2 '18 at 11:20
  • As I mentioned, retain is appropriate if it can be viewed as "some kind of upgrade", so Iphone 5 -> iphone 6 would count, even if the technologies used in these two versions are completely different. Macbook Pro -> Macbook Air would not count, as they are completely different product lines. – JavaLatte Mar 3 '18 at 3:52
  • OK. In my case, the new product is an improved version of an existing one. If iPhone5 -> iPhone 6 counts as an "upgrade" and would allow the use of retain, then that should also be appropriate for my case. – Grodriguez Mar 5 '18 at 9:08
  • If you can edit your answer to include this observation then I will happily mark it as accepted. – Grodriguez Mar 5 '18 at 9:11

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