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: Angiosperm sporophyte is dominant. 
Sentence2: Flowers form on angiosperms.
Angiosperm

Sentence1: Aggression is behavior that is intended to cause harm or pain. 
Sentence2: Verbal violence is behavior that is intended to cause harm or pain.
behavior

Sentence1: Most eukaryotes reproduce sexually. 
Sentence2: most animals reproduce sexually.

reproduce