Could you please tell me what the meaning of "not just" here is?
I certainly didn’t sound like them, and not just because they were British. Their speech had a lilting cadence that made me think of singing more than speaking. Educated by Tara Westover
I find in two online dictionaries the meanings below for "not just":
- used to say that one thing is true and that another thing is also true.
EX: She's not just my friend, she's my lawyer. 1
- not only
EX: It’s not just me. Other people are complaining too. 2
but I don't know for certain if they fit with the phrase or not. Does it simply mean?
I certainly didn’t sound like them, because:
(1)they were British
[moreover] (2)their speech had a lilting cadence that made me think of singing
more than speaking.
Could you help me please to find an exact answer?