Is the language system that studies words and their structures.

Morphology

Morphology is the study of word structure, how they form, and their relationships in a given language. Morphology tell us that words are made of smaller units called morphemes. A morpheme according to Zelig Harris is "Every sequence of phonemes which has meaning and which is not composed of smaller sequence having meaning, is a morpheme."

Morphemes combine hierarchically to form words; we usually use morphology threes  to study the combination of morphemes into words.

i don't think it's a good idea to threaten anyone at all.

"fire and ice" is one of robert frost's most popular poems. it was published in december 1920 in harper's magazine and in 1923 in his pulitzer prize−winning book new hampshire. it discusses the end of the world, likening the elemental force of fire with the emotion of desire, and ice with hate.

c. the power of desire is greater than the power of hate.