Tho

Etymology
From Gothic þō, from Proto-Germanic *sa, from Proto-Indo-European *só.

Article
tho
 * 1) the (neuter plural nominative definite article)
 * 2) the (feminine singular and neuter plural accusative definite article)

Pronoun
so
 * 1) these, those (neuter plural nominative and accusative demonstrative pronoun)
 * 2) this, that (feminine singular accusative demonstrative pronoun)