"preaching" in the noun sense
1. sermon, discourse, preaching
an address of a religious nature (usually delivered during a church service)
2. sermon, preaching
a moralistic rebuke
"your preaching is wasted on him"
"preaching" in the verb sense
1. preach, prophesy
deliver a sermon
"The minister is not preaching this Sunday"
2. preach, advocate
speak, plead, or argue in favor of
"The doctor advocated a smoking ban in the entire house"
Source: WordNet® (An amazing lexical database of English)
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