give the name of morpheme that part that joins the radical, giving it a new meaning. So, when we analyze the following example:
STONE
BOULDER
STONE
QUARRY
We found that the stem, that is, that static part of the word and of greatest importance, is demarcated by "-PEDR-", and the other parts that joined him could give meaning to the formed words – representing, therefore, the morphemes.
Therefore, because some of them have almost identical characteristics (because they are made up of the same vowel), the The article in question is intended to address all of them, with a view to providing a perfect understanding of one more aspect of the tongue. So let's see:
BOY GIRL
GIRL GIRL
We note that the vowels “o” and “a” designate what we call nominal endings, as they demarcate the gender of the words in question – male and female.
Now, let's look at other examples:
CHAIR TABLE
We cannot attribute the same feature to such examples (gender change) since there is no male form for any of them.
We found that this is not a gender mark, but a morpheme that joins the radical in order to form a base, which is linked to endings, such as "chairs and tables", indicating the brand pluralized.
It is then what we call the nominal thematic vowel, although there is also the thematic vowel verbal, indicating the conjunction belonging to the verbal forms, as in "to love", whose thematic vowel is the "and".
No less important is the connecting vowel representing a morpheme that only appears for euphonic reasons (connected to the sound), precisely to allow the word to be effectively pronounced. Verifiable in the following cases:
FRUTÍFERO
PONTIACUTE
GASÔSUBWAY
By Vânia Duarte
Graduated in Letters
Source: Brazil School - https://brasilescola.uol.com.br/gramatica/caracteristicas-que-diferenciam-alguns-morfemas.htm