Using singular verb for two entities

[Rinkyminky]

Kindly tell me if it is possible to use singular verb for two entities. For example-
(i) Diligence and perseverance is needed for success in life.
(ii) His unwavering dedication and hard word is unparralled.

In the above two sentences, can entities like 'diligence and perseverance' and 'unwavering dedication and hard work' be treated as a single entity under any circumstances?

 

[Tdol]

If the two things are associated and considered to make up a single entity, you can. These are not particularly good examples for me.

 

[emsr2d2]

[STRIKE]Kindly[/STRIKE] Please tell me if it is possible to use a singular verb for two entities. For example:

(i) Diligence and perseverance is needed for success in life.
(ii) His unwavering dedication and hard work is [STRIKE]unparralled[/STRIKE] unparalleled.

In the above two sentences, can entities like 'diligence and perseverance' and 'unwavering dedication and hard work' be treated as [STRIKE]a[/STRIKE] single entities under any circumstances?

Please note my corrections above.

It is possible to use a singular verb for something that includes two nouns but is often seen as one thing. A good example from BrE is "fish and chips". Even though those are two different foods, when served together they make up a very traditional takeaway meal. Because of that, you will hear things like "Fish and chips is my favourite Friday night dinner".