instruction:
Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
question:
Category: guitar part 
Words: fret, worried, chord, notes, headstock
answer:
worried


question:
Category: emotional display 
Words: fawn, antling, lust, suppressed, love
answer:
antling


question:
Category: boats 
Words: deck, hearts, crew, bow, head
answer:

hearts