This is the 924th most frequent Azerbaijani word.
odur
"It is that" or "that is."
'Odur' in this usage specifically denotes identification or confirmation of a person or object being referred to.
Həmin şəkildən görürsən ki, odur.
From that picture, you can see that it's him/her/it.
'Odur ki' is used as an idiomatic expression meaning 'the essence is', introducing a summarizing or focal point.
Hər şey odur ki, sənin səbrin vacibdir.
Everything is that your patience is important.
'Odur' here is used as a conjunction meaning 'that's why' or 'therefore', linking a reason to the outcome.