A word hoard is a term used to describe the collection of words a person has amassed over time. There are several synonyms for this term, such as lexicon, vocabulary, word bank, or word stockpile. A lexicon is a complete set of words or terminology used in a particular field of study or language. Vocabulary refers to the individual list of words which a person has learned and understands, while a word bank is a selection of words used by a specific industry or organization. Word stockpile, on the other hand, implies the accumulation of words, phrases, and expressions over time. All these terms are used interchangeably with word hoard and have similar meanings.