TASK DEFINITION: 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.
PROBLEM: Sentence1: Some birds are pollinators that co-evolved with plants. 
Sentence2: insects pollinate plants.

SOLUTION: plants

PROBLEM: Sentence1: Most fungi get organic compounds from dead organisms. 
Sentence2: Moulds, yeasts, rusts, smuts, mildews, and mushrooms are all types of fungi.

SOLUTION: fungi

PROBLEM: Sentence1: Infancy is the period of most rapid growth after birth. 
Sentence2: When a person is born, a birth certificate is written up to record their birth.

SOLUTION:
birth