If something is distinguishable from other things, it has a quality or feature which makes it possible for you to recognize it and see that it is different. ... features that make their products distinguishable from those of their rivals.
What does detectable mean?
If you can or ought to be able to notice something, it's detectable. An odor in your fridge is detectable. Or, there can be a detectable coolness in someone's behavior toward you. Detectable is related to the word detective, one of the guys on the police force who finds clues and tracks down bad guys.
What does the word distinguishable means?
adjective. able to be recognized as different, usually by means of some readily noticed feature or characteristic:The forged bills were easily distinguishable from real ones because they only had printing on one side.