Question

the difference between free morphemes and words is: free morphemes are the sound units of language that require no investment of speech energy. words are combinations of sounds that have meaning and require the investment of speech energy. free morphemes are units of meaning that consist of a single morpheme, and that may stand alone as words. words are the smallest parts of a sentence that can be said alone and still retain their meaning, and may consist of more than one morpheme. free morphemes are two or more different phones that can be used to make the same phoneme in a specific language. words are the smallest units of language that have meaning. free morphemes are the smallest significant units of sound in a language. words are the smallest parts of a sentence that can be said alone and still retain their meaning.

Explanation:

Free morphemes are single - morpheme units that can stand alone as words. Words can be single - morpheme (same as free morphemes in that case) or multi - morpheme and are the smallest meaningful units that can be said alone.

Answer:

Free morphemes are units of meaning that consist of a single morpheme, and that may stand alone as words. Words are the smallest parts of a sentence that can be said alone and still retain their meaning, and may consist of more than one morpheme.