a proper adjective ??

is there any suitable synonym for "same age" , I mean when 2 person for example are (have) same age (for instance both of them are 20 years old) what adjective can we use for them ?!

we can say : these 2 person are ................... (what ?)


and another question , what is a proper word for diffrences in age !
i mean what adjective can we use for 2 person that one of them is 23 years old $ one of them is 28 years old ?
we can say : these 2 person are ....................(what ?)

'same-age', 'same-aged' or 'equi-aged'

'different-age'/'different-aged'

these are the only listings I could find used online. None were found online in a dictionary or thesaurus.

I would say "same-aged" and "differently-aged".

As far as I know English does not have a single word to express these meanings. (I'm a native speaker, by the way). I would say the following in the examples you give:

these 2 person are the same age.

these 2 person are not the same age.

Ok, a correction to my previous comment.

these 2 persons are the same age.

these 2 persons are not the same age.

Although I would more likely say "people" than "persons".