Final answer:
The two types of memory are working memory (short-term memory) and long-term memory, with long-term memory further classified into explicit and implicit memory.
Step-by-step explanation:
The two types of memory being referred to in the question are short-term memory and long-term memory. These should not be confused with computer memory types, such as RAM (Random Access Memory) and ROM (Read-Only Memory), which might initially come to mind given the acronyms. For the human memory, the correct terminology for these types is working memory or short-term memory for the information we are currently thinking about or aware of, and long-term memory for the information we have stored to be retrieved later on.
Furthermore, long-term memory is divided into two types: explicit memory and implicit memory. Explicit memory, also known as declarative memory, includes things we consciously remember, such as facts or events, which is further divided into episodic memory (personal experiences) and semantic memory (general knowledge).
Implicit memory relates to things we may not consciously remember, such as skills we've learned through practice.