What does "to realize" mean?

could help me understand realization in this context?

[color=blue]In varieties of African-American English, the interdental fricatives are [realized [as either alveolar stops or labiodental fricatives, depending upon the location of the fricative in the word.

When located at the beginning of a word, the interdental fricative is realized as . For example, the word thin is pronounced as . When located word-medially or word-finally, the interdental fricative is realized as . For example, the word bath is pronounced as .

[color=red]Note: after every “as” there should be a sign (phonetical one) that is not a character in the keybord (by the way how can it be posted)

the interdental fricative is realized = the interdental fricative is spoken/pronounced as ‘…’.[YSaerTTEW443543]

TOEIC listening, photographs: Ready to cook[YSaerTTEW443543]

And some time later…

Thanks mr T…