Difference between Portmanteau Word and Mass Noun

PORTMANTEAU WORD vs MASS NOUN: NOUN

A word which combines the meaning of two words (or, rarely, more than two words), formed by combining the words, usually, but not always, by adjoining the first part of one word and the last part of the other, the adjoining parts often having a common vowel; for example, smog, formed from smoke and fog.
A new word formed by joining two others and combining their meanings

A noun that normally cannot be counted.
A noun, such as furniture, water, or honesty, that cannot be modified by the indefinite article, does not occur in the plural, and is often preceded by modifiers such as some or much or by a phrase containing a unit of measurement. Some nouns can function both as mass nouns (There are sixty boxes of tile in the warehouse) and as count nouns (We had to cut a tile in half to fit the end of the row).
A noun that does not form plurals

Abstractness, Hybridity, Metonymy, Onomatopoeic, Slanguage, Tabula, Diphthong, Lexis, Pluralized, Neologism, Folk etymology, Idiom, Noun, Blend, Portmanteau

Verb phrase, Anthimeria, Function word, Nounal, Adnominal, Verbify, Major form class, Noun, Noun phrase, Nounize, Content word, Adnoun, Concrete noun, Count noun, Common noun

Bricolage, Abstractness, Hybridity, Metonymy, Onomatopoeic, Slanguage, Tabula, Diphthong, Lexis, Pluralized, Neologism, Folk etymology, Idiom, Noun, Blend

Verb phrase, Anthimeria, Function word, Nounal, Adnominal, Verbify, Major form class, Noun, Noun phrase, Nounize, Content word, Adnoun, Concrete noun, Count noun, Common noun

But the word he actually used is a portmanteau word that has the feeling of both these meanings and perhaps a little more.

Used as a mass noun for humor using how to write double entendre entendres in your work requires careful thought, planning and.
In modern English usage, it is often treated as a mass noun with a singular verb.
It can also take a singular verb when followed by a mass noun.
Write MN if it is mass noun and CN if it is count noun.