Some of the questions here only accept Tiriodh as an answer, and mark you wrong for Tioradh. Unfortunately I didn't realise what was going on so didn't click the discuss link for that particular question in time.
I had to pick word tiles and it offered Tioradh and tiriodh. I chose the former and it marked it correct, then offered the second as an alternate answer. Those two words are not the same, and I realize I answered I am in Goodbye.