In a relationship, listening is a vital aspect that should be practiced. Even if your spouse is talking about the things from work that doesn't ring a bell to you like Shipping Containers or Metal Fabrication, it is important that you listen when they talk about it. This is vital especially if they came home and had a bad day at work. Talking about it releases the stress that they have had from their job or work.
You may not be able to relate to the topic that he is talking about but at least, you are there willing to listen. I am a good listener and whenever hubby is talking about something from his work, I try to understand or even if I don't understand it, I listened to him because it gives him the avenue to share what day he had at work. It is the same way with him when I tell him about my experience on certain Photo on Canvas that I reviewed or things that I got from the mail that doesn't ring a bell to him. Open communication is really important to make a relationship work.