'Aye'  pronounced the same as eye  in Scotland

After a few lessons with the community tutor, I realized that my passive vocabulary is good enough to understand what a person is talking about, but my active vocabulary is very poor, destitute I would say. So that is the reason why I've started writing notes. I hope they'll be interesting for the readers, and help me increase the number of words I use in conversations.

When I started writing notebooks, I realized that I never had anything to write about.  It's like my life is boring, or maybe I don't notice all the interesting things that happen around me.

I hope you understand what I'm writing about.  I'm extremely sorry for my English, I'm not a native speaker. I also hope that this text will not make your eyes bleed.

You are a boring person.
The film was boring.
I was bored at work because there was nothing to do.
I am bored. (Current mood)
We were bored

Hi everyone!
One of the things that I enjoy is making mini sculptures of cats. I make these mini sculptures as a hobby, but at the moment I'm making them for business.

How do we use these words properly? Are they the same? Can you guys please make some example sentences for me? Thank you!

Rival
nominee
competitor
opponent
candidate

They're not the same. Rival and opponent are similar.  

1. He was my main rival in the competition.
2. He was a nominee for the 'best singer award'
3. He was my main competitor 
4. He was a really difficult opponent
5. He was a great candidate for the job