C1
periodic vs periodical
The difference
| Word | Meaning | Goes with | Example |
|---|---|---|---|
| periodicadjective/ˌpɪr.iˈɑː.dɪk/ | Meaning happening regularly, but not all the time, with gaps of time in between | Goes with periodic table | Example The doctor recommended periodic checkups to keep an eye on my blood pressure. |
| periodicalnoun/ˌpɪr.iˈɑː.dɪ.kəl/ | Meaning a magazine or journal published regularly, such as every week, month or three months | Goes with subscribe to a periodical | Example She subscribes to several scientific periodicals to follow new research. |
Which word fits?
1 of 8Pick the word for the gap. Its form may change in the sentence.
maintenance keeps the machine running smoothly.