Metaphor:
The two roads in the poem are a metaphor for life choices. The speaker must decide which path to take, symbolizing the choices we face in life and the uncertainty that comes with making decisions.

Imagery:
Frost uses vivid imagery to describe the two roads, one being "grassy and wanted wear" and the other "just as fair." This imagery helps the reader visualize the paths and creates a sense of nostalgia and reflection.

Symbolism:
The fork in the road symbolizes the moment of decision in life where one must choose a path to follow. The speaker's contemplation of which road to take represents the internal struggle we all face when making important decisions.

Alliteration:
Frost uses alliteration in phrases like "sorry I could not travel both" to create a musical quality in the poem. This repetition of consonant sounds adds rhythm and emphasis to the speaker's dilemma.

Rhyme Scheme:
The poem follows an ABAAB rhyme scheme, with the second and fourth lines rhyming. This rhyme scheme contributes to the poem's musicality and gives it a sense of structure and form.

Enjambment:
Frost uses enjambment throughout the poem, where lines continue without punctuation at the end, creating a sense of flow and continuity. This technique adds to the natural, conversational tone of the poem.

Tone:
The tone of the poem is reflective and contemplative, as the speaker looks back on a decision made in the past. The use of poetic devices like metaphor and imagery enhances the tone and helps convey the speaker's sense of regret and uncertainty.