Generate an overlapping word between the given two sentences. When you find the overlapping words, they don't have to match exactly, e.g., "survival" and "survive" are valid overlapping words. Little words like "the" or "of" don't count! You must generate significant words which are not the stop words.

Sentence1: Most bryophytes are small.
Sentence2: Most in the same group as mosses are small.
small

Sentence1: Similarly, stars are referred to as suns, but our star is the Sun.
Sentence2: our star causes water to evaporate more quickly by adding heat.
our

Sentence1: folding an object causes that object to change shape.
Sentence2: Tri-fold cards fold into three sections.
folding