There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
londa-
verb. to boom, bang
londa
noun. heart
elben
noun. heart
elwen
noun. heart
A word appearing as ᴱQ. Elben “heart” in the Name-list to the Fall of Gondolin of the 1910s (LT2/202; PE15/23), but as ᴱQ. Elwen “heart” in the contemporaneous Qenya Lexicon under the early root ᴱ√LEFE (QL/35, 52). These words were connected to the character G. Elfrith who vanished from later versions of the legendarium.
hon
noun. heart
honde
noun. heart
hondo
noun. heart
kie
noun. path
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
A verb appearing as ᴱQ. londa- “to boom, bang” in the Qenya Lexicon of the 1910s as a derivative of the early root ᴱ√LOŘO [LOÐO] (QL/56).
Neo-Quenya: Since the root √(S)LON was used for noise words in Tolkien’s later writings, I think this verb might be adapted into Neo-Quenya as ᴺQ. hlonda- “to boom, bang, make (loud) noise”, a verb form of the noun ᴺQ. hlondë “loud noise”.