From man lscpu:

CPU
The logical CPU number of a CPU as used by the Linux kernel.

CORE
The logical core number. A core can contain several CPUs.

SOCKET
The logical socket number. A socket can contain several cores.

So yes, you have 4 CPUs, contained in 2 cores, contained in one physical socket.

From man lscpu:

CPU
The logical CPU number of a CPU as used by the Linux kernel.

CORE
The logical core number. A core can contain several CPUs.

SOCKET
The logical socket number. A socket can contain several cores.

So yes, you have 4 CPUs, contained in physical 2 cores, contained in one physical socket.

You can get the same information from cat /proc/cpuinfo.

Related question: So what are logical cpu cores (as opposed to physical cpu cores)?