I'm Nobody! Who are you?
Are you -- Nobody -- Too?
Then there's a pair of us!
Don't tell! they'd advertise -- you know!

How dreary -- to be -- Somebody!
How public -- like a Frog --
To tell one's name -- the livelong June --
To an admiring Bog!
-Emily Dickinson

is there assonance in this poem?
also what is consonance?

Freddie, go here:

[www.poeticbyway.com] />

Les

I'm Nobody! Who are you?
Are you -- Nobody -- Too?
Then there's a pair of us!
Don't tell! they'd advertise -- you know!

How dreary -- to be -- Somebody!
How public -- like a Frog --
To tell one's name -- the livelong June --
To an admiring Bog!
-Emily Dickinson

is there assonance in this poem?

Not much, no. 'Who are you' would be one example, though. That is, repeated vowel sounds nearby one other.

also what is consonance?

Repeated consonant sounds nearby each other, usually at the end (but also in the middle) of words. Compare alliteration - repeated consonant sounds at the beginning of nearby words.