What is the difference between idghaam mutajaanisayn and idghaam mutaqaribayn?

Question
What is the difference between idghaam mutajaanisayn and idghaam mutaqaribayn?
Answer
In idghaam mutajaanisayn the two letters share the same makhraj, but have different characteristics, such as with the دال  and  تاء
In idghaam mutaqaaribayn, the have similarities either between the makhaarij or characteristics, or both, but neither are the same for the two letters, such as the نون and ياء
Please see the following link for the lessons on the two similar and the two alike:
http://abouttajweed.com/kb/entry/956/