What's the difference between `times` and `newtxtext` packages?

Tex: Trouble at loading package newtxtext and introducing a font family through fontspec's newfon...

Polish Ł, ł render as plain L, l using newtxtext

Violetta - Tienes el talento Letra

How to use the default typewriter font with Times New Roman?

Minicurso de LaTeX: Adicionando referências e macros na linguagem

Overleaf Parte 1

Longtable doesn't include right border

LaTeX for professional typesetting

Restriction (or trace) in the style of "Probability Theory", by Klenke