Herein vs. Therein
Hereinadverb
Within this content, context, or thing.
Hereinadverb
In this.
Hereinadverb
in this place or thing or document;
Thereinadverb
(pronominal) in that; in him/her/it
Thereinadverb
In that or this place, time, or thing; in that particular or respect.
Thereinadverb
(formal) in or into that thing or place;
