What is
the definition of privacy surveillance?

At the most basic level, surveillance is a way of accessing data. Surveillance, implies an agent who accesses (whether through discovery tools, rules or physical/logistical settings) personal data. Privacy, in contrast, involves a subject who restricts access to personal data through the same means.

well, surveillance means observation, and privacy means, well, being able to be free without people watching you / observing you so maybe observing your privacy? i've never heard of that-

i think the answer is invented words, rhyming knack, alliteration, and, metaphor.