Complex sentence: Conceptually the Cortex-M33 is a Cortex-M4 plus TrustZone security features, and has a 3 stage instruction pipeline similar to Cortex-M4.
Split into simpler sentences: Conceptually the Cortex-M33 is a Cortex-M4 plus TrustZone security features. It has a 3 stage instruction pipeline similar to Cortex-M4.