How can an two amino acids have the same name, but be made up of different bases, what makes their characteristics

Question: How can an two amino acids have the same name, but be made up of different bases, what makes their characteristics similar to be renowned as the same amino acid in the bigger picture?
- Keywords:
  amino acid,
  structure
Asked by anon-244324 to Ondrej, Jordan, Eleanor, Ed on 19 Mar 2020.
- Eleanor Jones answered on 19 Mar 2020:
  
  Wow, complicated question. I’m afraid I have no answers to this as I never studied biology past GCSE!

Question: How can an two amino acids have the same name, but be made up of different bases, what makes their characteristics similar to be renowned as the same amino acid in the bigger picture?