Specialissue: In English, it is a special issue. Many internationally renowned magazines (such as IEEETrans) do this. It can't be said that special issues are worse than regular ones. The purpose of the special issue is to discuss Huashan's sword in view of a current research hotspot, so as to attract attention. Those who publish papers in specialized journals generally do better in this field.
The difference between a special issue and a general issue is that the period of publishing papers is shorter, mainly around a certain topic. Because it takes up publishing space, it can be regarded as the root. ?
Supplement: The conference uses the reputation of journals to attract contributions. Then the journal is afraid that such conference articles will affect its reputation, so it is called a supplement. "The articles in some supplements are also very good, if the meeting is very good", and the foreign language supplement is expressed by "ONS".