In the following set of words, which is different than the others?

Question

Quizplus · Accepted Answer

Bloom, as a verb, is defined as 'to come into full beauty or health; to flourish'. It is not similar to the other words in the set, because they pertain to death.
Necrotic is defined as 'the death of most or all of the cells in an organ or tissue due to disease'
A corpse is a dead body. 
Decay is defined as 'to rot or decompose through action of bacteria or fungi'. 
Decompose is defined as 'to make or become rotten, decay, or die'.

In the Following Set of Words, Which Is Different Than