Sometimes those words that we are searching for hide so well, don't they? Sometimes cliches are the best we can do, I think, in conveying some feelings, just because they seem to say it so well, but are best avoided when writing, but that's not an easy task! Of course, this is another great poem!
The challenge with writing poetry is trying to avoid cliches, to say something new. I have words that I love, phrases that have been used in different ways in my poetry used in a new manner but in the end they become over used and cliched. They are very hard to avoid whether you use established ones or ones that you have created yourself. But there is certainity nothing cliched about your poem, great poem.