Question

What characteristic do the poems "Will there really be a 'Morning?'" and "I dwell in Possibility" share?

a standard rhyme scheme

question marks to create yearning

the "mystery of nature" theme

capital letters to emphasize words


I'll post the poems in a sec

Will there really be a "Morning"?
Is there such a thing as "Day"?
Could I see it from the mountains
If I were as tall as they?

Has it feet like Water lilies?
Has it feathers like a Bird?
Is it brought from famous countries
Of which I have never heard?

Oh some Scholar! Oh some Sailor!
Oh some Wise Men from the skies!
Please to tell a little Pilgrim
Where the place called "Morning" lies! 

I dwell in Possibility-- 
A fairer House than Prose-- 
More numerous of Windows-- 
Superior--for Doors--

Of Chambers as the Cedars-- 
Impregnable of Eye-- 
And for an Everlasting Roof 
The Gambrels of the Sky--

Of Visitors--the fairest-- 
For Occupation--This-- 
The spreading wide my narrow Hands 
To gather Paradise--

Answer 1

they have the same sequence at the end of the poems

Answer 2

Emily Dickinson poetry style was criticized for her pairs, because she always wanted to bend the norms and capitalization was one of her favorites techniques to drive the reader attention, she used capital letters to emphasize words in both poems "Will there really be a 'Morning?'" and "I dwell in Possibility".