Elder and Firstborn

Elder adjective - Used of the older of two persons of the same name especially used to distinguish a father from his son.

Firstborn and elder are semantically related in older topic. In some cases you can use "Firstborn" instead the word "Elder" as an adjective or a noun.

Nearby Word: elderly

Firstborn adjective - First in order of birth.

Elder and firstborn are semantically related in older person topic. You can use "Elder" instead the word "Firstborn" as a noun or an adjective, if it concerns topics such as senior, most senior.