“I enjoy reading” vs. “I enjoy reading books.” Both "reading" here mean

Greetings:

Could someone please explain to me the different roles (if there is one) of the word “reading” in each of the sentences below:

“I enjoy reading” vs. “I enjoy reading books.”

I believe the first sentence (i.e., like + to-V), describes a temporary hobby, that just exists for a short time.

However, I believe the second sentence (i.e. I enjoy reading books with like + v-ing form) describes a permanent hobby, I means it exists through your whole life.

Hopefully, I am correct in explanations. However, what is the role of “reading” in both sentences? Are both gerunds or do they serve different grammatical functions in each sentence?

Any advice given is greatly appreciated.

I’d say “I enjoy reading” and “I enjoy reading books” mean exactly the same thing, since what else can you read but books?
I’d say they both describe a “permanent” hobby.

‘I enjoy reading books’ just clarifies matters a little.
I enjoy reading’ is generally considered to mean you enjoy reading books, however:

I enjoy reading newspapers.
I enjoy reading magazines
are both possible.