Early and Erstwhile

Early adjective - Relating to or occurring near the beginning of a process, series, or time period.

Erstwhile and early are semantically related. In some cases you can use "Erstwhile" instead the word "Early" as an adjective or an adverb.

Erstwhile adjective - Having been such at some previous time.

Early and erstwhile are semantically related. Sometimes you can use "Early" instead the word "Erstwhile" as an adjective or an adverb.