maximum limitation of COQL API

maximum limitation of COQL API

from this documentation



it said: You can retrieve a maximum of 1,00,000 records in multiple API calls per unique criteria. f you want to retrieve more than 1,00,000 records, use the Bulk Read API.

my questions are

1. what is per unique criteria here?
2. what is 
1,00,000 records? is it one hundred thousand or one million records? your documentation consistently said 1,00,000