B-flat vs j

B-flat

• The note one semitone below B, notated B♭. 

• A bedbug. 

j

• An alternative version of i, the positive square root of -1; used in the context of electronics. 

• The second unit vector, after i 

• A term for a marijuana cigarette ('joint'). 

• The tenth letter of the English alphabet, called jay and written in the Latin script. 

• a suffix or final syllable /ʃən/ (-tion, -sion, etc.)