This subject of this article is overwhelmingly described in sources as a war that began in 2022, these include:
Articles

• Russia’s War Against Ukraine: Context, Causes, and Consequences - the situation since 2022 is described repeatedly as "war", that before 2022 as "conflict".
• The effects of wars: lessons from the war in Ukraine - events since 2022 are described as "war", that before 2022 as "conflict".
• Why Russia went to war: a three-dimensional analysis - describes the 2014 conflict as "Russia’s ‘hybrid war’ of 2014" and the events after 2022 as "war".
• The war in Ukraine - 2023 round table discussion amongst experts all of whom describe the post-2022 events as "war" (e.g., " Admittedly, it was only after the Ukraine War had begun in early 2022...") and the events before 2022 as "pre-war" (e.g., "It is unclear how the US intelligence ‘scoop’ in August 2021 affected the last months of pre-war politics in the Kremlin.")

Books

• Ukraine and Russia: From Civilized Divorce to Uncivil War By Paul D'Anieri - refers to the "2014 war" and the "2022 war" repeatedly, the chapter on the events of 2022 is entitled "war".
• The War for Ukraine by General Mick Ryan - describes the previous conflict as "the 2014 war" and the post-2022 events as "war".
• Warmonger: Vladimir Putin's Imperial Wars by Alex J. Bellamy - the 2014 conflict is covered in two chapters: "Ukraine I" and "Ukraine II". In "Ukraine I" the only "war" mentioned is "War in Donbas". In "Ukraine II" the post-2022 conflict is repeatedly described as "war" (e.g., "Russia’s path to war in Ukraine...") and the section of this chapter that covers events on and after 24 February 2022 is headed simply "War".
• Russian Politics Today by Susanne A. Wengle - the post-2022 conflict is covered in a Prologue titled "Russia’s War in Ukraine" in which the conflict is repeatedly described as "the war", and elsewhere in the book this is also followed (e.g., p. 353 "By 2022, as Russia started a war in Ukraine"). In contrast the events before 2022 are not described as "war" , instead they are discussed in other terms (e.g., "In March 2014 – when Russia’s intervention in Crimea and the Donbas was beginning to materialize")
• Beyond Ukraine: Debating the Future of War - the post-2022 is described repeatedly as "the war in Ukraine", the previous conflict is described as "frozen conflicts").
• Collisions: The Origins of the War in Ukraine and the New Global Instability by Michael Kimmage - The post-2022 conflict is the titular "war" (e.g., from the introduction: "On February 24, 2022, Vladimir Putin launched a massive invasion of Ukraine, setting in motion changes that have been felt around the globe. Collisions is the story of this war’s origins."). The earlier conflict is described alternatively as the "War in Ukraine, round I" or the "2014 war".
• Belarus in Crisis: From Domestic Unrest to the Russia-Ukraine War by Paul Hansbury - the post-2022 conflict is the titular "war". The 2014 events are not discussed as a "war" (e.g., "Ukraine’s recent crisis", "a trend that had begun in 2014; some went to the Donbas region to fight alongside the pro-Russian forces").