This study aims to compare how leading companies in Spain and in Spanish-speaking Latin America communicate corporate social responsibility or sustainability on their web pages. For this purpose, the pages of 68 companies were examined to establish the accessibility of such topics and to trace how their prominence and wording had evolved over time. The results show a trend toward greater uniformity in both Spain and Latin America, with corporate social responsibility/sustainability discourse gaining in prominence and "responsibility"-related terms being gradually replaced by those related to "sustainability." Various cases hint that changes in terminology may be unrelated to any clear distinction between both terms.