By showing the word "end"before the word "beginning" in the title of a poem, the author conveys the feeling that it is the end of situations that allows the beginning of new ones.
You have not determined the poem that this question refers to, however, with the context of your question, we can see what kind of theme the poet wants to address.
This theme can be understood as follows:
By showing "end" before "beginning" in the title of the poem, the author reinforces an idea about the cyclical and repetitive nature of human events.
This idea shows that the end of something does not mean the absolute end we are used to, but it means the beginning of new things.
That's because the title shows how the "beginning" happens right after an end.
