Imagery is the ability to form mental images of things or events. It signifies all the sensory perceptions referred to in a poem, whether by literal description, allusion, simile, or metaphor. Like senses such as reflex movement, which occur due to a reaction to something that is coming to hit the person, human emotions occur due to the personal interpretation of the literature terms used by the poet. The emotions are the sentimental reactions of the reader based on their interpretation of the certain poem, phrase or sentence used by the poet. This technique, which when used properly can have a huge impact on the reader and on their understanding of the poem is used largely by T.S. Eliot in the 'Preludes' and 'The Journey of the Magi'.
The poet's intentions behind a poem can be guided by the poem's title since, it is the first thing that a reader is likely to read and thus, the title helps to put up certain first impressions as intended by the poet.
By the name, 'Preludes' it could be told that this is the first poem by the poet in the collection and is thus, likely to give impressions about the topics that the poet will further explore in the later poems.
On the other hand, 'The Journey of the Magi' gives the impression that the poet is talking about the three magi's who traveled a long distance just to see the birth of Jesus Christ and thus, the whole poem is about the events that took place during their journey and thus, their experiences. The title also helps to set up a base on which the poet then further extrapolates within the poem itself.
Metaphor and imagery create the scenes and evokes the...