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.

Q: Sentence1: healing requires rest. 
Sentence2: Healing and cell regeneration follows.

A: healing
****
Q: Sentence1: Plants that shed their leaves seasonally each year are called deciduous plants. 
Sentence2: vines shed their leaves seasonally each year.

A: each
****
Q: Sentence1: Flies are insects with two wings. 
Sentence2: Flies are arthropods with two wings.

A:
Flies
****