This plan lacks substance.
His talk has no real substance.
noun which may take the genitive case particle 'no'
Used as a no-adjective to describe something that is real or effective in practice, often in economic or practical contexts (e.g., real interest rate, real income).
Real wages have not risen.
He is the de facto leader.
in essence; effectively; practically
Adverbial use meaning 'in effect' or 'for all practical purposes', often used to state that something is almost the same as something else.
This job is practically finished.
He effectively has the same authority as the president.
parenchyma
Anatomical term for the functional tissue of an organ, as opposed to its structural or connective tissue.
An abnormality was found in the liver parenchyma.
He is, in effect, the president of this company.
The reform is in name only, without any real substance behind it.
This year's real growth rate was 2%.
実質 means the actual substance or content of something, in contrast to 体裁, which is just the outward form or appearance.
実質 refers to the true substance or reality of something, directly opposing 見かけ's focus on mere surface appearance.
名実 covers both the name and the reality together, whereas 実質 refers only to the actual substance, without reference to the name.
virtually zero; effectively zero; net zero
real income