The word odyssey means long journey. It also means an intellectual wandering or soul-searching. Based on the dictionary, Merriam-Webster, this term was adapted from the epic poem, The Odysseus by Homer. This word was included in the 1886 version of the dictionary.
A phrase is any collection of words that behaves like a part of speech, like a noun phrase (“my brother Stu”), an adjectival phrase (“in a different shade of blue”), or an adverbial phrase (“with elegance and tact”). A clause is any noun phrase plus a verb; they can be sentences, but they don't always have to be
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The main character's motivation is to keep his nets clean of dirt,support his wife and three children,be up and working by moonlight,catch stones, shells, and mud.