_____ refers to the failure to distinguish between similar but different people, objects, or events

Some publications are not so easy to classify as research sources. For example, Psychology Today and National Geographic can be considered both _____ and _____ publications

a. biographical; statistical b. open; deep c. primary; secondary d. scholarly; popular

Tim's new roommate, Ian, introduced himself to Tim with a cheery "G-Day," but then greeted Tim's parents with a more formal, "Hello, it's nice to meet you.". When Ian introduced himself to Tim, he was using a(n) ______________

a. equivocal word b. acronym c. euphemism d. colloquialism