certain

adjective1 of 2

being sure about something; without doubt

• “They have certainly benefited from the changes in the law.”Tatoeba
• “Aside from that, it's true that television has certain disadvantages.”Tatoeba

Sentences from Tatoeba show real usage. A word can have several meanings, so a sentence may use another one.

pronoun2 of 2

(with of) Unnamed or undescribed members (of).