cyclical

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective cyclical is

recurring at regular intervals.

As adjectives the difference between cyclical and periodical

is that cyclical is recurring at regular intervals while periodical is periodic.

As a noun periodical is

a publication issued regularly, but less frequently than daily.

As adjectives the difference between cyclical and noncyclical

is that cyclical is recurring at regular intervals while noncyclical is not cyclical.

As an adjective cyclical

is recurring at regular intervals.

As a noun anacyclosis is

a cyclical theory of political evolution.

As an adjective cyclical

is recurring at regular intervals.

As a noun parapegma is

a device for keeping track of cyclical events, particularly of stars, weather, seasons, and so on.