We taste and feel and see the truth. We do not reason ourselves into it. - William Butler Yeats

Words are always getting conventionalized to some secondary meaning. It is one of the works of poetry to take the truants in custody and bring them back to their right senses. Poets are the policemen of language; they are always arresting those old reprobates the words.

Red Rose, proud Rose, sad Rose of all my days!
Come near me, while I sing the ancient ways: Cuchulain battling with the bitter tide; The Druid, grey, wood-nurtured, quiet-eyed, Who cast round Fergus dreams, and ruin untold;

"It was the dream itself enchanted me:
Character isolated by a deed
To engross the present and dominate memory.
Players and painted stage took all my love,
And not those things that they were emblems of.

[from "The Circus Animals' Desertion"]"