In the context of this particular poem and stanzas it would be alienation and ambiguity. The character Richard Cory, is obviously isolated from common, ordinary people. He is alienated by not only a very privileged upbringing but by how it affects his place in society and such alienation is one of the core trends of Modernist poetry. He is referred to as “a king, admirably schooled, in his place” and this obviously separates him from the narrator and his social class. The poem obviously remains ambiguous about the reasons for his suicide but it clearly implies some kind of deep, prevalent malaise which stems from his isolation. The oxymoronic tension between “one calm summer night” and “”a bullet through his head” typify such alienation.