Swahili language
The exact number of Swahili speakers, be it native or second-language speakers, is unknown and a matter of debate. Various estimates have been put forward and they vary widely, from 50 million to over 100 million. Swahili serves as a national language of four nations: Tanzania, Kenya, Uganda, and the DRC. Shikomor, the official language in Comoros and also spoken in Mayotte (), is related to Swahili. Swahili is also one of the working languages of the African Union and officially recognised as a lingua franca of the East African Community. South Africa legalized the teaching of Swahili in South African schools as an optional subject beginning in 2020.
Spanish language
Spanish is one of the six official languages of the United Nations. It is also used as an official language by the European Union, the Organization of American States, the Union of South American Nations, the Community of Latin American and Caribbean States, the African Union and by many other international organizations.
It is estimated that more than 437 million people speak Spanish as a native language, which qualifies it as second on the lists of languages by number of native speakers. Instituto Cervantes claims that there are an estimated 477 million Spanish speakers with native competence and 572 million Spanish speakers as a first or second language—including speakers with limited competence—and more than 21 million students of Spanish as a foreign language.