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: Ground tissue makes up most of the interior of a plant. 
Sentence2: ground tissue makes up most of the interior of a dandelion.
[EX A]: Ground

[EX Q]: Sentence1: Specialization occurs when competing species evolve different adaptations. 
Sentence2: evolving different adaptations increases survival.
[EX A]: adaptations

[EX Q]: Sentence1: Sight is the ability to sense light, and the eye is the organ that senses light. 
Sentence2: Colors use the sense of sight.
[EX A]:
Sight