What is a key difference between the data captured by NetFlow and data captured by Wireshark?

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What is a key difference between the data captured by NetFlow and data captured by Wireshark?

NetFlow provides transaction data whereas Wireshark provides session data.
NetFlow data is analyzed by tcpdump whereas Wireshark data is analyzed by nfdump.
NetFlow collects metadata from a network flow whereas Wireshark captures full data packets.
NetFlow data shows network flow contents whereas Wireshark data shows network flow statistics.

Explanation: Wireshark captures the entire contents of a packet. NetFlow does not. Instead, NetFlow collects metadata, or data about the flow.