No they don't because fame ends with an 'm' sound whereas attain ends with an 'n' sound. Therefore they do not rhyme. That is with regular rhyming though if you were considering off rhymes through assonance it would rhyme because they have the same vowel sound.
No.
Not really, but it doesn't matter that much if you had no other options.
No, "pen" and "bed" are not an approximate rhyme. An approximate rhyme is when words have a similar ending sound but are not a perfect match, such as "pen" and "pain."
Plain and pain.
No. Please see the related questions below for "What rhymes with pain?" and "What rhymes with way?"
pain
Dozens of words could be used to rhyme with abstain. A few of the more common ones include: again, attain, complain, disdain, restrain, explain, mantain, insane, detain and terrain.
For example "Vengance shall fall on thy distain. That maket but game on earnest pain."
attain means accomplish.EXAMPLE:I want to attain knowledge.
The suffix of "attain" is "-tain."
pain rain cane main mane ( like a horse's mane ) And that's all I can think of. Good luck(: