Hi, can you please give a brief differentiation on Bioinformatics and Biomedical Informatics(health informatics). And the jobs related to it

Hi, I have completed my BTech in Biotechnology and want to do MS Bioinformatics in USA. I want to know the main difference between Bioinformatics and Biomedical Informatics. And also the scope of each filed and careers in USA. And also the jobs related to both the fields.