1) Similar 
• (a.) Capable of being confused.
Con·fus'a·ble adjective Capable of being confused. 
[adj] - so similar as to be easily confused
confusable So similar as to be easily identified for another thing: 'The dictionary contained potentially confusable senses of words.'
mistakable adjective so similar as to be easily identified for another thing; `potentially confusable senses of words`; `easily mistakable signals`