# Current tag synonym candidates

I suggest adopting the following system for handling tags that could be made synonyms. The system has worked well on Cross Validated: see here.

Please post your tag synonym suggestions as new answers in this thread, one answer per suggestion. Upvote answers where you believe that the suggested tags should be made synonyms, and downvote answers where you believe the tags should remain separate. Well upvoted suggestions will be eventually implemented by the moderators (and then the corresponding answers will be deleted).

• Are any of the proposals being considered by the moderators, or is this thread ignored/forgotten? Some effort has been put in here, after all... – Richard Hardy Dec 13 '20 at 17:55

(19) $$\leftarrow$$ (30)

• ARMA is a special case of ARIMA. Most often, an answer about ARMA will be relevant for ARIMA as well.
• has been made a synonym of on Cross Validated: see here (search for "ARMA" or "ARIMA").

(134) $$\leftarrow$$ (185) (30 overlapping)

• Both tags refer to exactly the same thing: value at risk (VaR).
• is an unambiguous name, while can suggest either VaR (value at risk) or VAR (vector autoregression); this confusion is somewhat common among people posting on Cross Validated, for example.

(63) $$\leftarrow$$ (9 questions)

• There is an argument to be made that certain questions are specifically about changing from one numéraire-measure to a new numéraire-measure, while others are specifically about properties under a certain numéraire-measure or numéraires in general. However in practice it is difficult to maintain that division. I have tried tagging some questions with one or the other but it slightly feels like hair-splitting.
• I see there is more numerairechange but I think the more general numeraire makes more sense as tag, agreed? – Bob Jansen Jun 17 '20 at 9:56
• @BobJansen Seems perfectly reasonable to me, I don't have a strong opinion on either. – Daneel Olivaw Jun 17 '20 at 10:02

(274) $$\leftarrow$$ (14) (3 nonoverlapping)

• ARCH is a special case of GARCH. Most often, an answer about ARCH will be relevant for GARCH as well.
• has only 14 questions while GARCH has 274. Only 3 questions are not tagged with as well.
• has been made a synonym of on Cross Validated: see here (search for "ARCH" or "GARCH").

(171) $$\leftarrow$$ (29) (25 nonoverlapping)

• I doubt there can be a clear distinction between the two terms.
Having both tags is confusing and without obvious benefits.