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I'm not a native speaker and I want to describe the following case:

There is an Active Directory group and another one. Let's say "Managers" and "Janitors". Both of these groups have the same members.

So~, do these groups overlap each over, or do they intersect? Or is there any other word?

In Russian I'd say "пересекаться". As in "группы пересекаются"

Edit to clarify the question:

E.g. 'Sally' and 'Harry' are members of Managers group, 'Jack' and 'Sally' are members of Janitors group. So do these groups overlap or intersect or something else?

(note that 'Sally' is a member of both of these groups).

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Are they the same members or their number is the same? –  user19148 Apr 15 '13 at 20:01
    
@Carlo_R. for example 'Sally' and 'Harry' are members of Managers group, 'Jack' and 'Sally' are members of Janitors group. So do these groups overlap or intersect or something else? ^_^ (note that 'Sally' is a member of both of these groups). –  bahrep Apr 15 '13 at 20:07
    
"Managers and Janitors have some members in common." –  Andrew Leach Apr 15 '13 at 20:17
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Ah, I see. Then, out of math contexts, use overlap. –  user19148 Apr 15 '13 at 20:19
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bah, generally speaking, people vote down questions which are off-topic or show no research efforts. It is worthy noting that too basic questions can be asked on English Language Learners (ell.stackexchange.com), the new SE proposal tailored for people learning English as second language. –  user19148 Apr 15 '13 at 20:50

1 Answer 1

up vote 5 down vote accepted

There are numerous ways to say that two groups have some members in common:
• The “Managers” and “Janitors” groups overlap
• The groups have an overlap
• The groups intersect
• The groups have a non-empty intersection
• The groups have some members in common
• Some people are in both groups

Different people will choose different phrases, depending on preferences and circumstances. All of the above forms are acceptable but I think I'd use the last form instead of speaking of overlaps and intersections.

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