diff --git a/frontend/src/lib/formatters/formatLanguage.ts b/frontend/src/lib/formatters/formatLanguage.ts
new file mode 100644
index 0000000..c162f3e
--- /dev/null
+++ b/frontend/src/lib/formatters/formatLanguage.ts
@@ -0,0 +1,9 @@
+const languageNames: Record<string, string> = {
+	en: 'English',
+	fr: 'French',
+	es: 'Spanish',
+	it: 'Italian',
+	de: 'German'
+};
+
+export const formatLanguage = (code: string) => languageNames[code] ?? code.toUpperCase();
diff --git a/frontend/src/lib/formatters/index.ts b/frontend/src/lib/formatters/index.ts
new file mode 100644
index 0000000..87f8b84
--- /dev/null
+++ b/frontend/src/lib/formatters/index.ts
@@ -0,0 +1 @@
+export { formatLanguage } from './formatLanguage';
diff --git a/frontend/src/lib/spacy/types.ts b/frontend/src/lib/spacy/types.ts
new file mode 100644
index 0000000..0a2bad6
--- /dev/null
+++ b/frontend/src/lib/spacy/types.ts
@@ -0,0 +1,19 @@
+export interface PartsOfSpeechData {
+	language: string;
+	sentences: {
+		text: string;
+		tokens: PartOfSpeechToken[];
+	}[];
+}
+
+export interface PartOfSpeechToken {
+	dep: string;
+	pos: string;
+	tag: string;
+	text: string;
+	type: null | string;
+	lemma: string;
+	is_stop: boolean;
+	is_alpha: boolean;
+	is_punct: boolean;
+}