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.

[EX Q]: Sentence1: Most bryophytes are small. 
Sentence2: Most in the same group as mosses are small.
[EX A]: small

[EX Q]: Sentence1: Herbs are medicines and aids. 
Sentence2: herbs are used for curing people when they are sick.
[EX A]: Herbs

[EX Q]: Sentence1: stomata closing reduces water loss. 
Sentence2: More carbon dioxide means fewer stomata and vice versa.
[EX A]:
stomata