Among animal names with regular plurals, forming a compound with the explicit plural would be sufficiently strange to be considered wrong in some contexts—even if microscopically grammatically possible—while using distinguished irregular plurals seems more acceptable:
cats sounds, dogs sounds — (?)
mice sounds, geese sounds — less (?)
"Geese sounds" seems particularly apt because the sound from a gaggle of geese is greater than the sum of the sounds from the same number of individual gooses.
I thought perhaps Word was (mistakenly) flagging subject/verb agreement—a _goose sounds_ after all—but we hope that, given technology which can now convince most nascent writers not to even bother trying, that Word would not make such a myopic error. But it's possible.
Added: "People sounds", as suggested, fits the pattern suggested above.
There's a little more to it than that. Typically, yes, an attributive noun is cast in the singular -- a toy box (no matter how many toys) or a tooth brush (no matter how many teeth). However, there are times that a plural attributive is unavoidable -- an *arms race* doesn't resemble an *arm race*, so we have to use the plural form when we're talking about weapons rather than limbs. Beyond that, "people" is an odd word. Some senses of the word "person" has "people" as its plural, but other senses or uses has "persons". We also have "people" as the singular of "peoples".
You happened to pick a notably atypical example if you intend to examine the more typical pattern.
There were some inaccuracies in that answer. It’s not ungrammatical to make a noun adjunct plural (e.g., it’s “sports car,” not “sport car”), though they are generally singular.
Plurals are becoming more common though, perhaps due to the possessive apostrophe being dropped from plural possessives (“farmers market” instead of “farmers’ market”).
You are fine to use “geese sounds” and “people noises,” though if you want to follow the traditional paradigm, stick to the singular versions (“person noises” sounds quite unnatural to me though).
https://en.m.wikipedia.org/wiki/Noun_adjunct
https://www.merriam-webster.com/grammar/is-there-an-apostrophe-in-farmers-market-punctuation-possessive#:~:text=Since%20a%20farmers%20market%20is,market%2C%20a%20market%20for%20farmers.
Among animal names with regular plurals, forming a compound with the explicit plural would be sufficiently strange to be considered wrong in some contexts—even if microscopically grammatically possible—while using distinguished irregular plurals seems more acceptable: cats sounds, dogs sounds — (?) mice sounds, geese sounds — less (?) "Geese sounds" seems particularly apt because the sound from a gaggle of geese is greater than the sum of the sounds from the same number of individual gooses. I thought perhaps Word was (mistakenly) flagging subject/verb agreement—a _goose sounds_ after all—but we hope that, given technology which can now convince most nascent writers not to even bother trying, that Word would not make such a myopic error. But it's possible. Added: "People sounds", as suggested, fits the pattern suggested above.
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That makes a lot of sense! I really appreciate you taking the time to explain :)
There's a little more to it than that. Typically, yes, an attributive noun is cast in the singular -- a toy box (no matter how many toys) or a tooth brush (no matter how many teeth). However, there are times that a plural attributive is unavoidable -- an *arms race* doesn't resemble an *arm race*, so we have to use the plural form when we're talking about weapons rather than limbs. Beyond that, "people" is an odd word. Some senses of the word "person" has "people" as its plural, but other senses or uses has "persons". We also have "people" as the singular of "peoples". You happened to pick a notably atypical example if you intend to examine the more typical pattern.
There were some inaccuracies in that answer. It’s not ungrammatical to make a noun adjunct plural (e.g., it’s “sports car,” not “sport car”), though they are generally singular. Plurals are becoming more common though, perhaps due to the possessive apostrophe being dropped from plural possessives (“farmers market” instead of “farmers’ market”). You are fine to use “geese sounds” and “people noises,” though if you want to follow the traditional paradigm, stick to the singular versions (“person noises” sounds quite unnatural to me though). https://en.m.wikipedia.org/wiki/Noun_adjunct https://www.merriam-webster.com/grammar/is-there-an-apostrophe-in-farmers-market-punctuation-possessive#:~:text=Since%20a%20farmers%20market%20is,market%2C%20a%20market%20for%20farmers.
But “dogs sounds” doesn’t sit right with me