Count and display the TOP10 words occurrences from an event?

Hello everyone, I'm trying to count every occurrences words from all events and get a TOP 10. Each sentences is an event: Cisco Products IPv6 Neighbor Discovery Crafted Packet Denial Service Vulnerability Cisco Application Policy Infrastructure Controller Binary Files Privilege Escalation Vulnerability Cisco Aironet 3800 Series Access Point Platforms ARP Request Handling Denial Service Vulnerability Cisco IP Phone 8800 Series Web Application Buffer Overflow Vulnerability Cisco IOS XR Software LPTS Denial Service Vulnerability Cisco Aironet Access Points Command-Line Interpreter Linux Shell Command Injection Vulnerability Cisco WebEx Meeting Center Site Access Control User Account Enumeration Vulnerability Cisco Prime Infrastructure Evolved Programmable Network Manager Remote Code Execution Vulnerability Cisco IP 8800 Series Phones btcli Utility Command Injection Vulnerability Cisco Prime Network Analysis Module Unauthenticated Remote Code Execution Vulnerability Cisco Prime Network Analysis Module IPv6 Denial Service Vulnerability Cisco Prime Network Analysis Module Authenticated Remote Code Execution Vulnerability Cisco Prime Network Analysis Module Local Command Injection Vulnerability Multiple Vulnerabilities OpenSSL Affecting Cisco Products: May 2016 Cisco ESA WSA AMP ClamAV Denial Service Vulnerability Cisco Firepower Management Center Web Interface Code Injection Vulnerability Cisco UCS Invicta Software Default GPG Key Vulnerability Cisco Prime Infrastructure Cisco Evolved Programmable Network Manager JSON Privilege Escalation Vulnerability Multiple Vulnerabilities OpenSSL Affecting Cisco Products: March 2016 For exemple here the result will be: Cisco Vulnerability Prime Network Denial Service Analysis Code Injection Module Thanks for your help, Best regards,