Embraer ERJ
Encyclopedia
Embraer ERJ usually means the Embraer ERJ 145 family
Embraer ERJ 145 family
The Embraer ERJ 145 family is a series of regional jets produced by Embraer, a Brazilian aerospace company. Family members include the ERJ 135 , ERJ 140 , and ERJ 145 , as well as the Legacy business jet and the R-99 family of military aircraft. The ERJ 145 is the largest of the group...

 but:

It can also mean, by extension, the Embraer E-Jet family.
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