Additional context:
https://en.wikipedia.org/wiki/Approximant_consonant
https://en.wikipedia.org/wiki/Semivowel
https://en.wikipedia.org/wiki/R-colored_vowel
https://en.wikipedia.org/wiki/L-vocalization
https://en.wikipedia.org/wiki/Syllabic_consonant
Additional context:
https://en.wikipedia.org/wiki/Approximant_consonant
https://en.wikipedia.org/wiki/Semivowel
https://en.wikipedia.org/wiki/R-colored_vowel
https://en.wikipedia.org/wiki/L-vocalization
https://en.wikipedia.org/wiki/Syllabic_consonant