Phishing is a related term of phish.

As verbs the difference between phish and phishing

is that phish is to engage in phishing while phishing is present participle of lang=en.

As nouns the difference between phish and phishing

is that phish is an instance of a phishing attack while phishing is the act of sending email that falsely claims to be from a legitimate organization. This is usually combined with a threat or request for information: for example, that an account will close, a balance is due, or information is missing from an account. The email will ask the recipient to supply confidential information, such as bank account details, PINs or passwords; these details are then used by the owners of the website to conduct fraud.