The single word square uses the same words across as down, and several articles about these have appeared in Word Ways, usually dealing with the construction of the largest possible square made of respectable English words. This article will examine single word squares that can be made to overlap. The smallest possible word square that can be made to partially overlap with another one is of size 2x2. There are, in fact, three distinct ways for two such squares to overlap, and examples for each are shown.
Wolpow, Edward R.
"Overlapping Word Squares,"
Word Ways: Vol. 16
, Article 6.
Available at: https://digitalcommons.butler.edu/wordways/vol16/iss4/6