IPA: /njuːˈkliːoʊˌkæpsɪd/
KK: /ˈnjuːklɪoʊˌkæpsɪd/
The main part of a virus that includes its genetic material and is covered by a protein shell.
The nucleocapsid protects the viral genetic material from degradation.
Nucleocapsid → It is formed from "nucleo-" (from Latin "nucleus", meaning kernel or core) and "capsid" (from Latin "capsa", meaning box or container). The word "nucleocapsid" refers to the protein shell that encases the genetic material of a virus, essentially a container for the core of the virus.
Think of the 'core' ('nucleo-') of a virus being held in a 'container' ('capsid') — that's what a nucleocapsid is.
No commonly confused words.