What dose its connotation or shade of meaning mean

How do the authors differ in the way they present the war in "facing it" and "ambush"?

Unity in a paragraph means: my writing persuades my readers to agree with the argument i am presenting. the paragraph discusses and supports one thought throughout the entire paragraph. all sentences in a paragraph are the same length and structure. the first sentence and the last sentence echo the exact same thought.

Which word does housman emphasize to draw attention to the importance of living in the present moment?