To run:
require './word_count'
# to search for a single word
word_count = Count.new
word_count.word_frequency(phrase)[word_you_are_searching_for]
# to search for a two word phrase
phrase_count = Count.new
phrase_count.phrase_frequency(phrase)[phrase_you_are_searching_for]
You can run this in either IRB or create a new file.