EBS can only be used with EC2 instances while S3 can be used outside EC2

EBS appears as a mountable volume while the S3 requires software to read and write data

EBS can accommodate a smaller amount of data than S3

EBS can only be used by one EC2 instance at a time while S3 can be used by multiple instances

S3 typically experiences write delays while EBS does not

http://www.differencebetween.net/technology/internet/difference-between-amazon-s3-and-amazon-ebs/#:~:text=EBS%20can%20only%20be%20used,be%20used%20by%20multiple%20instances