need to explain a poem by elizabeth browning......A sea-side walk......can anyone help me i have no clue about imagery and irony and all that jazz....please help anyone

We walked beside the sea,
After a day which perished silently
Of its own glory---like the Princess weird
Who, combating the Genius, scorched and seared,
Uttered with burning breath, ‘ho!victory!’
And sank adown, an heap of ashes pale;
So runs the Arab tale.

The sky above us showed
An universal and unmoving cloud,
On which, the cliffs permitted us to see
Only the outline of their majesty,
As master-minds, when gazed at by the crowd!
And, shining with a gloom, the water grey
Swang in its moon-taught way.

Nor moon nor stars were out.
They did not dare to tread so soon about,
Though trembling, in the footsteps of the sun.
The light was neither night’s nor day’s, but one
Which, life-like, had a beauty in its doubt;
And Silence’s impassioned breathings round
Seemed wandering into sound.

O solemn-beating heart
Of nature! I have knowledge that thou art
Bound unto man’s by cords he cannot sever---
And, what time they are slackened by him ever,
So to attest him own supernal part,
Still runneth thy vibration fast and strong,
The slackened cord along.

For though we never spoke
Of the grey water anal the shaded rock,---
Dark wave and stone, unconsciously, were fused
Into the plaintive speaking that we used,
Of absent friends and memories unforsook;’
And, had we seen each other’s face, we had
Seen haply, each was sad

What specifically do you need to know?