Hestia.
sparow
A proper noun is the name or title of a specific person, place, or thing. Some examples are:LuxembourgLouisianaLincolnLawrenceLanzhouLesothoLamborghiniLeonardoLeviticusLabrador
A duiker is an example of an animal that starts with a "d" and has six letters. It is a small antelope found in sub-Saharan Africa.
One celebrity name with six letters that starts with a "G" is Gisele, referring to Gisele Bündchen, the Brazilian supermodel and actress. Another example is Grimes, the Canadian musician and producer known for her eclectic sound and artistic style.
ardent
buffetboxing
opened
BARBIE
turtle
A science word that is six letters ans starts with the letter c is convex.
The logo you are referring to is likely "Google." The name has six letters, starts with 'o,' and fits the hint you provided. Google is widely recognized for its search engine and various online services.