to go extinct; to be annihilated; to be eliminated

extinction; annihilation; elimination

misgivings, unease, apprehension

have misgivings, be apprehensive, fear, be concerned, feel uneasy

naming; designation; specification

eagle (bird) / (figuratively, historical, Empire of Japan) aviator

eagle

seed / plant, sow / class, kind, variety / (taxonomy) species

a seed / a kind, type, sort, class, or category / (taxonomy) a species

counter for number of kinds or types