This is the 1801st most frequent Spanish word.
científica
"Scientific" or "scientist" (feminine form).
Here, 'científica' is used as an adjective modifying 'investigación', denoting that the research in question is of a scientific nature.
La investigación científica nos ayuda a entender el mundo.
Scientific research helps us understand the world.
In this sentence, 'científica' is a noun referring to a female scientist, indicating the professional engaged in scientific study.
La científica presentó sus hallazgos en la conferencia.
The scientist presented her findings at the conference.
'Científica' functions as an adjective describing 'avance', indicating that the advancement pertains to the scientific field or methodology.