How to different subsequence and substring

Question

subsequence and substring both of them similar or not (these operator about java code string )

Answer 1

A subsequence is part of the string that does not appear in chronological order.

Example:
↓↓↓ ↓
string = "Sweet potato"
subseq = "weep"

A substring is a part of the string that appears in chronological order.

Example:
↓↓↓
string = "Sweet potato"
subseq = "pot"

Hth, cmiiw