In Poetry: Meaning of Words

When I write poetry, I check out the meaning of words for too often they sound the same, but once written, and if spelled wrong, in consequence, give a complete different meaning of what I had intended; this I call a moment of damage control. If my rhyme is flat, and my cadence is off, so what, I can survive, as long as the meaning of my words are not; and are as I meant them to be. Even punctuation can be off, and not do too much damage, but not so with my meaning of words, when they are off; or, is not as I intended them to be. I am not a professor, or perfectionist in/of English, nor need to be, a minor in literature is it and will do, but here is the bottom of the iceberg in poetry