City hall and Expert witness

City hall noun - A building that houses administrative offices of a municipal government.

Expert witness and city hall are semantically related. In some cases you can use "Expert witness" instead a noun phrase "City hall".

Expert witness noun - A witness who has knowledge not normally possessed by the average person concerning the topic that he is to testify about.

City hall and expert witness are semantically related. Sometimes you can use "City hall" instead a noun phrase "Expert witness".